Pack ackage 1.1 P ack age Contents
ASRock 945GCM-S Motherboard (Micro ATX Form Factor: 9.6-in x 7.5-in, 24.4 cm x 19.1 cm) ASRock 945GCM-S Quick Installation Guide ASRock 945GCM-S Support CD One 80-conductor Ultra ATA 66/100 IDE Ribbon Cable (Optional) One Serial ATA (SATA) Data Cable (Optional) One Serial ATA (SATA) HDD Power Cable (Optional) One I/O Panel Shield

Specifications

- Micro ATX Form Factor: 9.6-in x 7.5-in, 24.4 cm x 19.1 cm - LGA 775 for Intel Dual Core CoreTM 2 Extreme / CoreTM 2 Duo / Pentium Dual Core / Celeron, supporting Dual Core Wolfdale processors - Compatible with all FSB1333/1066/800/533MHz CPUs except Quad Core (see CAUTION 1) - Supports Hyper-Threading Technology (see CAUTION 2) - Supports Untied Overclocking Technology (see CAUTION 3) - Supports EM64T CPU - Northbridge: Intel 945GC - Southbridge: Intel ICH7 - Dual Channel DDR2 Memory Technology (see CAUTION 4) - 2 x DDR2 DIMM slots - Supports DDR2 667/533 non-ECC, un-buffered memory (see CAUTION 5) - Max. capacity of system memory: 4GB (see CAUTION 6) - 1 x PCI Express x16 slot - 1 x PCI Express x1 slot - 2 x PCI slots - Intel Graphics Media Accelerator 950 - Pixel Shader 2.0, DirectX 9.0 - Max. shared memory 224MB (see CAUTION 7) - 5.1 CH Windows VistaTM Premium Level HD Audio (Realtek ALC662 Audio Codec) - Realtek PCIE x1 LAN 8102EL - Speed: 10/100 Ethernet - Supports Wake-On-LAN I/O Panel - 1 x PS/2 Mouse Port - 1 x PS/2 Keyboard Port - 1 x Serial Port: COM1 - 1 x VGA Port - 4 x Ready-to-Use USB 2.0 Ports - 1 x RJ-45 LAN Port - HD Audio Jack: Line in / Front Speaker / Microphone - 4 x SATAII 3.0 Gb/s connectors (No Support for RAID and Hot Plug functions) (see CAUTION 8) - 1 x ATA100 IDE connector (supports 2 x IDE devices) - 1 x Floppy connector

Platform CPU

Chipset Memory

Expansion Slot

Graphics

Audio LAN

Rear Panel I/O

Connector

BIOS Feature
Support CD Unique Feature

Hardware Monitor

OS Certifications
- 1 x Print port header - CPU/Chassis FAN connector - 24 pin ATX power connector - 4 pin 12V power connector - CD in header - Front panel audio connector - 2 x USB 2.0 headers (support 4 USB 2.0 ports) (see CAUTION 9) - 4Mb AMI BIOS - AMI Legal BIOS - Supports Plug and Play - ACPI 1.1 Compliance Wake Up Events - Supports jumperfree - AMBIOS 2.3.1 Support - Supports Smart BIOS - Drivers, Utilities, AntiVirus Software (Trial Version) - Intelligent Energy Saver (see CAUTION 10) - Hybrid Booster: - CPU Frequency Stepless Control (see CAUTION 11) - ASRock U-COP (see CAUTION 12) - Boot Failure Guard (B.F.G.) - CPU Temperature Sensing - Chassis Temperature Sensing - CPU Fan Tachometer - Chassis Fan Tachometer - CPU Quiet Fan - Voltage Monitoring: +12V, +5V, +3.3V, Vcore - Microsoft Windows 2000 / XP / XP 64-bit / VistaTM / VistaTM 64-bit compliant - FCC, CE

* For detailed product information, please visit our website: http://www.asrock.com WARNING Please realize that there is a certain risk involved with overclocking, including adjusting the setting in the BIOS, applying Untied Overclocking Technology, or using the thirdparty overclocking tools. Overclocking may affect your system stability, or even cause damage to the components and devices of your system. It should be done at your own risk and expense. We are not responsible for possible damage caused by overclocking.

CAUTION!

1. FSB1333-CPU will operate in overclocking mode. Under this situation, PCIE frequency will also be overclocked to 115MHz. Besides, if you want to overclock the CPU you adopt from FSB800 to FSB1066, you need to adjust the jumpers. Please refer to page 18 for proper jumper settings. 2. 3. 4. About the setting of Hyper Threading Technology, please check page 30. This motherboard supports Untied Overclocking Technology. Please read Untied Overclocking Technology on page 24 for details. This motherboard supports Dual Channel Memory Technology. Before you implement Dual Channel Memory Technology, make sure to read the installation guide of memory modules on page 16 for proper installation. 5. Please check the table below for the CPU FSB frequency and its corresponding memory support frequency. CPU FSB Frequency 800 Memory Support Frequency DDR2 533*, DDRDDR2 533, DDRDDR2 400, DDR2 533, DDR2 667
533 DDR2 400, DDR* When you use a FSB1333-CPU on this motherboard, it will run at 6. DDRif you adopt a DDRmemory module. Due to the chipset limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows XP, Windows XP 64-bit, Windows VistaTM and Windows VistaTM 64-bit. 7. 8. The maximum shared memory size is defined by the chipset vendor and is subject to change. Please check Intel website for the latest information. Before installing SATAII hard disk to SATAII connector, please read the SATAII Hard Disk Setup Guide on page 23 to adjust your SATAII hard disk drive to SATAII mode. You can also connect SATA hard disk to SATAII connector directly. 9. Power Management for USB 2.0 works fine under Microsoft Windows VistaTM 64-bit / VistaTM / XP 64-bit / XP SP1 or SP2 / 2000 SP4.
10. Featuring an advanced proprietary hardware and software design, Intelligent Energy Saver is a revolutionary technology that delivers unparalleled power savings. In other words, it is able to provide exceptional power saving and improve power efficiency without sacrificing computing performance. Please visit our website for the operation procedures of Intelligent Energy Saver. ASRock website: http://www.asrock.com 11. Although this motherboard offers stepless control, it is not recommended to perform over-clocking. Frequencies other than the recommended CPU bus frequencies may cause the instability of the system or damage the CPU.

Chapter 2 Installation

945GCM-S is a Micro ATX form factor (9.6" x 7.5", 24.4 x 19.1 cm) motherboard. Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits into it.
Make sure to unplug the power cord before installing or removing the motherboard. Failure to do so may cause physical injuries to you and damages to motherboard components.

2.1 Screw Holes

Place screws into the holes indicated by circles to secure the motherboard to the chassis.
Do not over-tighten the screws! Doing so may damage the motherboard.
2.2 Pre-installation Precautions
Take note of the following precautions before you install motherboard components or change any motherboard settings. 1. Unplug the power cord from the wall socket before touching any component. 2. To avoid damaging the motherboard components due to static electricity, NEVER place your motherboard directly on the carpet or the like. Also remember to use a grounded wrist strap or touch a safety grounded object before you handle components. 3. Hold components by the edges and do not touch the ICs. 4. Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that comes with the component.
Before you install or remove any component, ensure that the power is switched off or the power cord is detached from the power supply. Failure to do so may cause severe damage to the motherboard, peripherals, and/or components.

2.3 CPU Installation

For the installation of Intel 775-LAND CPU, please follow the steps below.
775-Pin Socket Overview Before you insert the 775-LAND CPU into the socket, please check if the CPU surface is unclean or if there is any bent pin on the socket. Do not force to insert the CPU into the socket if above situation is found. Otherwise, the CPU will be seriously damaged.
CPU Marked Corner Step 1. Open the socket: Step 1-1. Disengaging the lever by depressing Lift Lever Up to 90 down and out on the Socket Marked Corner hook to clear retention tab.
Step 1-2. Rotate the load lever to fully open position at approximately 135 degrees. Step 1-3. Rotate the load plate to fully open position at approximately 100 degrees. Step 2. Insert the 775-LAND CPU: Step 2-1. Hold the CPU by the edges where are marked with black lines.

black line

Step 2-2. Orient the CPU with IHS (Integrated Heat Sink) up. Locate Pin1 and the two orientation key notches.
Pin1 orientation key notch orientation key notch Pin1 alignment key alignment key

1. 2. It is not allowed to install a DDR memory module into DDR2 slot; otherwise, this motherboard and DIMM may be damaged. If you install only one memory module or two non-identical memory modules, it is unable to activate the Dual Channel Memory Technology.

Installing a DIMM

Please make sure to disconnect power supply before adding or removing DIMMs or the system components.

Step 1. Step 2.

Unlock a DIMM slot by pressing the retaining clips outward. Align a DIMM on the slot such that the notch on the DIMM matches the break on the slot.

notch break

The DIMM only fits in one correct orientation. It will cause permanent damage to the motherboard and the DIMM if you force the DIMM into the slot at incorrect orientation.

Step 3.

Firmly insert the DIMM into the slot until the retaining clips at both ends fully snap back in place and the DIMM is properly seated.
2.6 Expansion Slots (PCI and PCI Express Slots)
There are 2 PCI slots and 2 PCI Express slots on this motherboard. PCI slots: PCI slots are used to install expansion cards that have the 32-bit PCI interface. PCIE slots: PCIE1 (PCIE x1 slot) is used for PCI Express cards with x1 lane width cards, such as Gigabit LAN card, SATA2 card, etc. PCIE2 (PCIE x16 slot) is used for PCI Express cards with x16 lane width graphics cards.
If you install the add-on PCI Express VGA card to PCIE2 (PCIE x16 slot), the onboard VGA will be disabled. If you install the add-on PCI Express VGA card to PCIE2 (PCIE x16 slot) and adjust the Internal Graphics Mode Select BIOS option to [Enabled], the onboard VGA will be enabled, and the primary screen will be onboard VGA.
Installing an expansion card
Step 1. Before installing the expansion card, please make sure that the power supply is switched off or the power cord is unplugged. Please read the documentation of the expansion card and make necessary hardware settings for the card before you start the installation. Remove the bracket facing the slot that you intend to use. Keep the screws for later use. Align the card connector with the slot and press firmly until the card is completely seated on the slot. Fasten the card to the chassis with screws.

Step 2. Step 3. Step 4.

2.7 Jumpers Setup
The illustration shows how jumpers are setup. When the jumper cap is placed on pins, the jumper is Short. If no jumper cap is placed on pins, the jumper is Open. The illustration shows a 3-pin jumper whose pin1 and pin2 are Short when jumper cap is placed on these 2 pins. Jumper Setting PS2_USB_PWR1 2_3 1_2
Description Short pin2, pin3 to enable (see p.10 No. 1) +5VSB (standby) for PS/2 +5V +5VSB or USB wake up events. Note: To select +5VSB, it requires 2 Amp and higher standby current provided by power supply. Clear CMOS

(CLRCMOS1, 2-pin jumper) (see p.10 No. 8)

2-pin jumper

Note: CLRCMOS1 allows you to clear the data in CMOS. The data in CMOS includes system setup information such as system password, date, time, and system setup parameters. To clear and reset the system parameters to default setup, please turn off the computer and unplug the power cord from the power supply. After waiting for 15 seconds, use a jumper cap to short 2 pins on CLRCMOS1 for 5 seconds. OC 800 Jumper
(OC 800, 3-pin jumper, see p.10 No. 27)
Default Note: If you want to overclock the FSB800-CPU (e.g. Cel400, E1000, E2000, E4000, E5000, E6000 series CPU) to FSB1066 on this motherboard, you need to adjust the jumpers. Please short pin2, pin3. Otherwise, the CPU may not work properly on this motherboard. Please refer to below jumper settings.
2.8 Onboard Headers and Connectors
Onboard headers and connectors are NOT jumpers. Do NOT place jumper caps over these headers and connectors. Placing jumper caps over the headers and connectors will cause permanent damage of the motherboard!

FDD connector

(33-pin FLOPPY1) (see p.10 No. 20)

Pin1 FLOPPY1

the red-striped side to Pin1
Note: Make sure the red-striped side of the cable is plugged into Pin1 side of the connector. Primary IDE connector (Blue)
(39-pin IDE1, see p.10 No. 7)
connect the black end connect the blue end to the IDE devices to the motherboard 80-conductor ATA 66/100 cable Note: Please refer to the instruction of your IDE device vendor for the details.

Serial ATAII Connectors

(SATAII_1: see p.10, No. 13) (SATAII_2: see p.10, No. 12) (SATAII_3: see p.10, No. 10) (SATAII_4: see p.10, No. 11)
Serial ATA (SATA) Data Cable

(Optional)

These Serial ATAII (SATAII) connectors support SATAII or SATA hard disk for internal storage devices. The current SATAII interface allows up to 3.0 Gb/s data transfer rate. Either end of the SATA data cable can be connected to the SATA / SATAII hard disk or the SATAII connector on the motherboard. Please connect the black end of SATA power cable to the power connector on each drive. Then connect the white end of SATA power cable to the power connector of the power supply.
Serial ATA (SATA) Power Cable
connect to the SATA HDD power connector connect to the power supply

USB 2.0 Headers

(9-pin USB6_7) (see p.10 No. 15)
USB_PWR P-7 P+7 GND DUMMY

GND P+6 P-6 USB_PWR

Besides four default USB 2.0 ports on the I/O panel, there are two USB 2.0 headers on this motherboard. Each USB 2.0 header can support two USB 2.0 ports.

(9-pin USB4_5) (see p.10 No. 16)
USB_PWR P-5 P+5 GND DUMMY 1 GND P+4 P-4 USB_PWR

Print Port Header

(25-pin LPT1) (see p.10 No. 26)
AFD# ERROR# PINIT# SLIN# GND
This is an interface for print port cable that allows convenient connection of printer devices.
SPD7 SPD6 ACK# SPD5 BUSY SPD4 PE SPD3 SLCT SPD2 SPD1 SPD0 STB#

Internal Audio Connector

(4-pin CD1) (CD1: see p.10 No. 23)

CD-L GND GND CD-R

This connector allows you to receive stereo audio input from sound sources such as a CD-ROM, DVD-ROM, TV tuner card, or MPEG card. This is an interface for front panel audio cable that allows convenient connection and control of audio devices.

Front Panel Audio Header

(9-pin HD_AUDIO1) (see p.10 No. 21)
GND PRESENCE# MIC_RET OUT_RET
OUT2_L J_SENSE OUT2_R MIC2_R MIC2_L
1. High Definition Audio supports Jack Sensing, but the panel wire on the chassis must support HDA to function correctly. Please follow the instruction in our manual and chassis manual to install your system. 2. If you use AC97 audio panel, please install it to the front panel audio header as below: A. Connect Mic_IN (MIC) to MIC2_L. B. Connect Audio_R (RIN) to OUT2_R and Audio_L (LIN) to OUT2_L. C. Connect Ground (GND) to Ground (GND).
D. MIC_RET and OUT_RET are for HD audio panel only. You dont need to connect them for AC97 audio panel. E. Enter BIOS Setup Utility. Enter Advanced Settings, and then select Chipset Configuration. Set the Front Panel Control option from [Auto] to [Enabled]. F. Enter Windows system. Click the icon on the lower right hand taskbar to enter Realtek HD Audio Manager. For Windows 2000 / XP / XP 64-bit OS: Click Audio I/O, select Connector Settings , choose
Disable front panel jack detection, and save the change by clicking OK. For Windows VistaTM / VistaTM 64-bit OS: Click the right-top Folder icon , choose Disable front panel jack detection, and save the change by clicking OK. G. To activate the front mic. For Windows 2000 / XP / XP 64-bit OS: Please select Front Mic as default record device. If you want to hear your voice through front mic, please deselect "Mute" icon in Front Mic of Playback portion. For Windows VistaTM / VistaTM 64-bit OS: Go to the "Front Mic" Tab in the Realtek Control panel. Click "Set Default Device" to make the Front Mic as the default record device.

System Panel Header

(9-pin PANEL1) (see p.10 No. 17)

PLED+ PLEDPWRBTN# GND

This header accommodates several system front panel functions.
DUMMY RESET# GND HDLEDHDLED+

Chassis Speaker Header

(4-pin SPEAKER 1) (see p.10 No. 14)

SPEAKER DUMMY DUMMY +5V

Please connect the chassis speaker to this header.

Chassis Fan Connector

(3-pin CHA_FAN1) (see p.10 No. 19)

GND +12V CHA_FAN_SPEED

Please connect a chassis fan cable to this connector and match the black wire to the ground pin. Please connect a CPU fan cable to this connector and match the black wire to the ground pin.

CPU Fan Connector

(4-pin CPU_FAN1) (see p.10 No. 4)
GND +12V CPU_FAN_SPEED FAN_SPEED_CONTROL
Though this motherboard provides 4-Pin CPU fan (Quiet Fan) support, the 3-Pin CPU fan still can work successfully even without the fan speed control function. If you plan to connect the 3-Pin CPU fan to the CPU fan connector on this motherboard, please connect it to Pin 1-3.
Pin 1-3 Connected 3-Pin Fan Installation

ATX Power Connector

(24-pin ATXPWR1) (see p.10, No. 6)
Please connect an ATX power supply to this connector.
Though this motherboard provides 24-pin ATX power connector, 12 it can still work if you adopt a traditional 20-pin ATX power supply. To use the 20-pin ATX power supply, please plug your power supply along with Pin 1 and Pin 13.
20-Pin ATX Power Supply Installation

ATX 12V Connector

(4-pin ATX12V1) (see p.10 No. 28)
Please note that it is necessary to connect a power supply with ATX 12V plug to this connector so that it can provides sufficient power. Failing to do so will cause the failure to power up.
SAT SATAII Hard Disk Setup Guide
Before installing SATAII hard disk to your computer, please carefully read below SATAII hard disk setup guide. Some default setting of SATAII hard disks may not be at SATAII mode, which operate with the best performance. In order to enable SATAII function, please follow the below instruction with different vendors to correctly adjust your SATAII hard disk to SATAII mode in advance; otherwise, your SATAII hard disk may fail to run at SATAII mode. Western Digital

If pin 5 and pin 6 are shorted, SATA 1.5Gb/s will be enabled. On the other hand, if you want to enable SATAII 3.0Gb/s, please remove the jumpers from pin 5 and pin 6. SAMSUNG
If pin 3 and pin 4 are shorted, SATA 1.5Gb/s will be enabled. On the other hand, if you want to enable SATAII 3.0Gb/s, please remove the jumpers from pin 3 and pin 4. HITACHI Please use the Feature Tool, a DOS-bootable tool, for changing various ATA features. Please visit HITACHIs website for details: http://www.hitachigst.com/hdd/support/download.htm
The above examples are just for your reference. For different SATAII hard disk products of different vendors, the jumper pin setting methods may not be the same. Please visit the vendors website for the updates.
AT (SAT AT (SAT 2. Serial ATA (SATA) / Serial ATAII (SATAII) Hard Disks Installation
This motherboard adopts Intel ICH7 south bridge chipset that supports Serial ATA (SATA) / Serial ATAII (SATAII) hard disks. You may install SATA / SATAII hard disks on this motherboard for internal storage devices. This section will guide you to install the SATA / SATAII hard disks. STEP 1: Install the SATA / SATAII hard disks into the drive bays of your chassis. STEP 2: Connect the SATA power cable to the SATA / SATAII hard disk. STEP 3: Connect one end of the SATA data cable to the motherboards SATAII connector. STEP 4: Connect the other end of the SATA data cable to the SATA / SATAII hard disk.
2. Driver Installation Guide
To install the drivers to your system, please insert the support CD to your optical drive first. Then, the drivers compatible to your system can be auto-detected and listed on the support CD driver page. Please follow the order from up to bottom side to install those required drivers. Therefore, the drivers you install can work properly.
2. Untied Overclocking Technology Technology
This motherboard supports Untied Overclocking Technology, which means during overclocking, FSB enjoys better margin due to fixed PCI / PCIE buses. Before you enable Untied Overclocking function, please enter Overclock Mode option of BIOS setup to set the selection from [Auto] to [CPU, PCIE, Async.]. Therefore, CPU FSB is untied during overclocking, but PCI / PCIE buses are in the fixed mode so that FSB can operate under a more stable overclocking environment.
Please refer to the warning on page 7 for the possible overclocking risk before you apply Untied Overclocking Technology.
Chapter 3 BIOS SETUP UTILITY

3.1 Introduction

This section explains how to use the BIOS SETUP UTILITY to configure your system. The BIOS FWH chip on the motherboard stores the BIOS SETUP UTILITY. You may run the BIOS SETUP UTILITY when you start up the computer. Please press <F2> during the Power-On-Self-Test (POST) to enter the BIOS SETUP UTILITY, otherwise, POST will continue with its test routines. If you wish to enter the BIOS SETUP UTILITY after POST, restart the system by pressing <Ctl> + <Alt> + <Delete>, or by pressing the reset button on the system chassis. You may also restart by turning the system off and then back on. Because the BIOS software is constantly being updated, the following BIOS setup screens and descriptions are for reference purpose only, and they may not exactly match what you see on your screen.

3.1.1 BIOS Menu Bar

The top of the Main Advanced PCIPnP Boot screen has a menu bar with the following selections: To set up the system time/date information To set up the advanced BIOS features To set up the PCI features To set up the default system device to locate and load the Operating System Security To set up the security features Chipset To set up the chipset features Exit To exit the current screen or the BIOS SETUP UTILITY Use < > key or < > key to choose among the selections on the menu bar, and then press <Enter> to get into the sub screen.

3.1.2 Navigation Keys

Please check the following table for the function description of each navigation key. Navigation Key(s) / / + / <Enter> <F1> <F9> <F10> <ESC> Function Description Moves cursor left or right to select Screens Moves cursor up or down to select items To change option for the selected items To bring up the selected screen To display the General Help Screen To load optimal default values for all the settings To save changes and exit the BIOS SETUP UTILITY To jump to the Exit Screen or exit the current screen

3.2 Main Screen

When you enter the BIOS SETUP UTILITY, the Main screen will appear and display the system overview

Options for CPU

Advanced Settings
WARNING : Setting wrong values in below sections may cause system to malfunction. CPU Configuration Chipset Configuration ACPI Configuration IDE Configuration PCIPnP Configuration Floppy Configuration SuperIO Configuration USB Configuration
Setting wrong values in this section may cause the system to malfunction.

3.4.1 CPU Configuration

BIOS SETUP UTILITY Advanced CPU Configuration
Overclock Mode CPU Frequency (MHz) PCIE Frequency (MHz) Boot Failure Guard Spread Spectrum Ratio Actual Value Enhance Halt State Max CPUID Value Limit Intel (R) Virtualization tech. CPU Thermal Throttling No-Excute Memory Protection Hyper Threading Technology Intel (R) SpeedStep(tm) tech. [Auto] [133] [100] [Enabled] [Auto] 9 [Disabled] [Disabled] [Enabled] [Enabled] [Disabled] [Enabled] [Auto] Select Screen Select Item Change Option General Help Load Defaults Save and Exit Exit Select the over clock mode.

+F1 F9 F10 ESC

Overclock Mode Use this to select Overclock Mode. The default value is [Auto]. Cnfiguration options: [Auto], [CPU, PCIE, Sync.], [CPU, PCIE, Async.] and [Optimized]. CPU Frequency (MHz) Use this option to adjust CPU frequency. PCIE Frequency (MHz) Use this option to adjust PCIE frequency.
Boot Failure Guard Enable or disable the feature of Boot Failure Guard. Spread Spectrum This item should always be [Auto] for better system stability. Ratio Status This is a read-only item, which displays whether the ratio status of this motherboard is Locked or Unlocked. If it shows Unlocked, you will find an item Ratio CMOS Setting appears to allow you changing the ratio value of this motherboard. Ratio Actual Value This is a read-only item, which displays the ratio actual value of this motherboard. Ratio CMOS Setting If the ratio status is unlocked, you will find this item appear to allow you changing the ratio value of this motherboard. If the CPU you adopt supports EIST (Intel (R) SpeedStep(tm) tech.), and you plan to adjust the ratio value, please disable the option Intel (R) SpeedStep(tm) tech. in advance. Enhance Halt State All processors support the Halt State (C1). The C1 state is supported through the native processor instructions HLT and MWAIT and requires no hardware support from the chipset. In the C1 power state, the processor maintains the context of the system caches. Max CPUID Value Limit For Prescott CPU only, some OSes (ex. NT4.0) cannot handle the function with disable. This should be enabled in order to boot legacy OSes that cannot support CPUs with extended CPUID functions. Intel (R) Virtualization tech. When this option is set to [Enabled], a VMM (Virtual Machine Architecture) can utilize the additional hardware capabilities provided by Vanderpool Technology. This option will be hidden if the installed CPU does not support Intel (R) Virtualization Technology. CPU Thermal Throttling You may select [Enabled] to enable P4 CPU internal thermal control mechanism to keep the CPU from overheated. This option will be hidden if the current CPU does not support CPU Thermal Throttling. No-Excute Memory Protection No-Execution (NX) Memory Protection Technology is an enhancement to the IA-32 Intel Architecture. An IA-32 processor with No Execute (NX) Memory Protection can prevent data pages from being used by malicious software to execute code. This option will be hidden if the current CPU does not support No-Excute Memory Protection.

Hyper Threading Technology To enable this feature, it requires a computer system with an Intel Pentium 4 processor that supports Hyper-Threading technology and an operating system that includes optimization for this technology, such as Microsoft Windows XP. Set to [Enabled] if using Microsoft Windows XP, or Linux kernel version 2.4.18 or higher. This option will be hidden if the installed CPU does not support Hyper-Threading technology. Intel (R) SpeedStep(tm) tech. Intel (R) SpeedStep(tm) tech. is Intels new power saving technology. Processor can switch between multiple frequency and voltage points to enable power savings. The default value is [Auto]. Configuration options: [Auto], [Enabled] and [Disabled]. If you install Windows XP and select [Auto], you need to set the Power Schemes as Portable/Laptop to enable this function. If you install Windows VistaTM and want to enable this function, please set this item to [Enabled]. This item will be hidden if the current CPU does not support Intel (R) SpeedStep(tm) tech.
Please note that enabling this function may reduce CPU voltage and lead to system stability or compatibility issue with some power supplies. Please set this item to [Disable] if above issue occurs.
3.4.2 Chipset Configuration
BIOS SETUP UTILITY Advanced Chipset Configuration
DRAM Frequency Flexibility Option DRAM tCL DRAM tRCD DRAM tRP DRAM tRAS Advanced DRAM Configuration Primary Graphics Adapter Internal Graphics Mode Select DVMT Mode Select DVMT/FIXED Memory OnBoard HD Audio Front Panel OnBoard Lan [Auto] [Disabled] [Auto] [Auto] [Auto] [Auto] [Auto] [PCI] [Auto] [DVMT Mode] [Maximum DVMT] [Auto] [Auto] [Enabled] Select Screen Select Item Change Option General Help Load Defaults Save and Exit Exit Options Auto 200MHz (DDRII400) 266MHz (DDRII533) 333MHz (DDRII667)
DRAM Frequency If [Auto] is selected, the motherboard will detect the memory module(s) inserted and assigns appropriate frequency automatically. You may also select other value as operating frequency: [200MHz (DDRII 400)], [266MHz (DDRII 533)], [333MHz (DDRII 667)]. The configuration options may change according to the corresponding FSB frequency of the CPU you adopt.
Flexibility Option The default value of this option is [Disabled]. It will allow better tolerance for memory compatibility when it is set to [Enabled]. DRAM tCL Use this item to adjust the means of memory accessing. Configuration options are [6], [5], [4], [3] and [Auto]. DRAM tRCD This controls the latency between the DRAM active command and the read / write command. Configuration options: [2 DRAM Clocks], [3 DRAM Clocks], [4 DRAM Clocks], [5 DRAM Clocks], [6 DRAM Clocks] and [Auto]. DRAM tRP This controls the idle clocks after a precharge command is issued. Configuration options: [2 DRAM Clocks], [3 DRAM Clocks], [4 DRAM Clocks], [5 DRAM Clocks], [6 DRAM Clocks] and [Auto]. DRAM tRAS Thhis controls the number of DRAM clocks for TRAS. Configuration options: [4 DRAM Clocks], [5 DRAM Clocks], [6 DRAM Clocks], [7 DRAM Clocks], [8 DRAM Clocks], [9 DRAM Clocks], [10 DRAM Clocks], [11 DRAM Clocks], [12 DRAM Clocks], [13 DRAM Clocks], [14 DRAM Clocks], [15 DRAM Clocks] and [Auto]. Advanced DRAM Configuration This item allows you to adjust advanced DRAM configuration. The default value is [Auto]. Configuration options: [Auto] and [Manual]. Primary Graphics Adapter This item shows the primary graphics adapter. The default value is [PCI]. Configuration options: [Onboard], [PCI] and [PCI Express]. Internal Graphics Mode Select If you select [Auto], the onboard VGA will be automatically disabled when you install VGA card; the onboard VGA will be enabled without the installation of any add-on VGA card. If you select [Enabled, 8MB] or [Enabled, 1MB], the onboard VGA will be enabled. DVMT Mode Select Use this option to adjust DVMT mode. Configuration options: [Fixed Mode], [DVMT Mode] and [Fixed+DVMT Mode]. The default value is [DVMT Mode]. DVMT (Dynamic Video Memory Technology) is an architecture that offers breakthrough performance for the motherboard through efficient memory utilization. In Fixed mode, a fixed-size fragment of the system memory is allocated to the graphics core. In DVMT mode, the graphics driver allocates memory as needed for running graphics applications and is cooperatively using this memory with other system components. In Fixed+DVMT mode, the graphics processor gets a fixed-size chunk of 64MB of memory and up to 64MB of dynamically-allotted memory. This mode guarantees that at least

64MB of memory is available to the graphics core, with a possibility to increase this amount to 128MB, if necessary. This item will not be used under Windows VistaTM OS because the driver will intelligently detect physical memory available and allocate necessary video memory. DVMT/FIXED Memory You are allowed to adjust the shared memory size in this item if you set DVMT Mode Select as [DVMT Mode]. Configuration options: [64MB], [128MB] and [Maximum DVMT]. OnBoard HD Audio Select [Auto], [Enabled] or [Disabled] for the onboard HD Audio feature. If you select [Auto], the onboard HD Audio will be disabled when PCI Sound Card is plugged. Front Panel Select [Auto], [Enabled] or [Disabled] for the onboard HD Audio Front Panel. OnBoard Lan This allows you to enable or disable the OnBoard Lan feature. PCI Fix Function This allows you to enable or disable PCI Fix Function. The default value is [Enabled]. If this item is set to [Enabled], PCI frequency can be fixed at 33.3 MHz. If this item is set to [Disabled], PCI clock can be synchronized to PCIE clock. DRAM Voltage Use this to select DRAM Voltage. Configuration options: [Auto], [1.794V], [1.851V], [1.908V], [1.965V], [2.029V], [2.086V], [2.144V] and [2.201V]. The default value of this feature is [Auto]. NB Core Voltage Use this to select NB core Voltage. Configuration options: [Auto], [1.494V], [1.543V], [1.594V] and [1.643V]. The default value of this feature is [Auto]. VTT Voltage Use this to select VTT Voltage. Configuration options: [Auto], [1.21V], [1.32V], [1.40V] and [1.51V]. The default value of this feature is [Auto]. Intelligent Energy Saver Intelligent Energy Saver is a revolutionary technology that delivers unparalleled power savings. The default value is [Auto]. Configuration options: [Auto], [Enabled] and [Disabled]. If you want to enable this function, please set this item to [Enabled]. Besides the BIOS option, you can also choose our Intelligent Energy Saver utility to enable this function.

3.4.3 ACPI Configuration

BIOS SETUP UTILITY Advanced ACPI Configuration
Suspend To RAM Restore on AC/Power Loss Ring-In Power On PCI Devices Power On PS / 2 Keyboard Power On RTC Alarm Power On ACPI HPET Table [Disabled] [Power Off] [Disabled] [Disabled] [Disabled] [Disabled] [Disabled] +F1 F9 F10 ESC Select Screen Select Item Change Option General Help Load Defaults Save and Exit Exit Select auto-detect or disable the STR feature.

Configure Settings during System Boot.
3.6.1 Boot Settings Configuration
BIOS SETUP UTILITY Boot Boot Settings Configuration
Full Screen Logo AddOn ROM Display Boot From Onboard LAN Bootup Num-Lock [Enabled] [Enabled] [Disabled] [On] Disabled: Displays normal POST messages. Enabled: Displays OEM Logo instead of POST messages.
Full Screen Logo Use this item to enable or disable OEM Logo. The default value is [Enabled]. AddOn ROM Display Use this option to adjust AddOn ROM Display. If you enable the option Full Screen Logo but you want to see the AddOn ROM information when the system boots, please select [Enabled]. Configuration options: [Enabled] and [Disabled]. The default value is [Enabled].
Boot From Onboard LAN Use this item to enable or disable the Boot From Onboard LAN feature. Boot Up Num-Lock If this item is set to [On], it will automatically activate the Numeric Lock function after boot-up.

3.7 Security Screen

In this section, you may set or change the supervisor/user password for the system. For the user password, you may also clear it.

Security Settings

Supervisor Password User Password : Not Installed : Not Installed
Install or Change the password.
Change Supervisor Password Change User Password
Select Screen Select Item Change General Help Load Defaults Save and Exit Exit

3.8 Exit Screen

Exit Options
Save Changes and Exit Discard Changes and Exit Discard Changes Would you like to save current setting user defaults ? Save 1st User Defaults Load 1st User Defaults Save 2nd User Defaults Load 2nd User Defaults Save 3rd User Defaults Load 3rd User Defaults
Save Changes and Exit When you select this option, it will pop-out the following message, Save configuration changes and exit setup? Select [OK] to save the changes and exit the BIOS SETUP UTILITY. Discard Changes and Exit When you select this option, it will pop-out the following message, Discard changes and exit setup? Select [OK] to exit the BIOS SETUP UTILITY without saving any changes. Discard Changes When you select this option, it will pop-out the following message, Discard changes? Select [OK] to discard all changes. Would you like to save current setting user defaults? In this option, you are allowed to load and save three user defaults according to your own requirements.
Software Support Chapter 4 Sof tware Suppor t
4. 1 Install Operating System This motherboard supports various Microsoft Windows operating systems: 2000 / XP / XP 64-bit / VistaTM / VistaTM 64-bit. Because motherboard settings and hardware options vary, use the setup procedures in this chapter for general reference only. Refer to your OS documentation for more information. 4. 2 Support CD Information The Support CD that came with the motherboard contains necessary drivers and useful utilities that enhance the motherboard features. 4. 2. 1 Running The Support CD To begin using the support CD, insert the CD into your CD-ROM drive. The CD automatically displays the Main Menu if AUTORUN is enabled in your computer. If the Main Menu did not appear automatically, locate and double click on the file ASSETUP.EXE from the BIN folder in the Support CD to display the menus. 4. 2. 2 Drivers Menu The Drivers Menu shows the available devices drivers if the system detects installed devices. Please install the necessary drivers to activate the devices. 4. 2. 3 Utilities Menu The Utilities Menu shows the applications software that the motherboard supports. Click on a specific item then follow the installation wizard to install it. 4.2.4 Contact Information If you need to contact ASRock or want to know more about ASRock, welcome to visit ASRocks website at http://www.asrock.com; or you may contact your dealer for further information.

Copyright Notice:

No part of this installation guide may be reproduced, transcribed, transmitted, or translated in any language, in any form or by any means, except duplication of documentation by the purchaser for backup purpose, without written consent of ASRock Inc. Products and corporate names appearing in this guide may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners benefit, without intent to infringe.

Disclaimer:

Specifications and information contained in this guide are furnished for informational use only and subject to change without notice, and should not be constructed as a commitment by ASRock. ASRock assumes no responsibility for any errors or omissions that may appear in this guide. With respect to the contents of this guide, ASRock does not provide warranty of any kind, either expressed or implied, including but not limited to the implied warranties or conditions of merchantability or fitness for a particular purpose. In no event shall ASRock, its directors, officers, employees, or agents be liable for any indirect, special, incidental, or consequential damages (including damages for loss of profits, loss of business, loss of data, interruption of business and the like), even if ASRock has been advised of the possibility of such damages arising from any defect or error in the guide or product.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. CALIFORNIA, USA ONLY The Lithium battery adopted on this motherboard contains Perchlorate, a toxic substance controlled in Perchlorate Best Management Practices (BMP) regulations passed by the California Legislature. When you discard the Lithium battery in California, USA, please follow the related regulations in advance. Perchlorate Material-special handling may apply, see www.dtsc.ca.gov/hazardouswaste/perchlorate ASRock Website: http://www.asrock.com
Published August 2008 Copyright2008 ASRock INC. All rights reserved.
ASRock 945GCM-S Motherboard

English

Layout Motherboard L ayout
PS2_USB_PWR1 Jumper 775-Pin CPU Socket North Bridge Controller CPU Fan Connector (CPU_FAN1) 2 x 240-pin DDR2 DIMM Slots (Dual Channel: DDRII_1, DDRII_2; Yellow) ATX Power Connector (ATXPWR1) IDE1 Connector (IDE1, Blue) Clear CMOS Jumper (CLRCMOS1) South Bridge Controller Third SATAII Connector (SATAII_3; Orange) Fourth SATAII Connector (SATAII_4; Orange) Secondary SATAII Connector (SATAII_2; Red) Primary SATAII Connector (SATAII_1; Red) Chassis Speaker Header (SPEAKER 1, Purple)
USB 2.0 Header (USB6_7, Blue) USB 2.0 Header (USB4_5, Blue) System Panel Header (PANEL1, Orange) BIOS SPI Chip Chassis Fan Connector (CHA_FAN1) Floppy Connector (FLOPPY1) Front Panel Audio Header (HD_AUDIO1, Lime) PCI Slots (PCI1- 2) AInternal Audio Connector: CD1 (Black) PCI Express x16 Slot (PCIE2) PCI Express x1 Slot (PCIE1) Print Port Header (LPT1, Purple) OC 800 Jumper ATX 12V Connector (ATX12V1)

I/O Panel Panel

PS/2 Mouse Port (Green) USB 2.0 Ports (USB23) RJ-45 Port Line In (Light Blue) Line Out (Lime)
Microphone (Pink) USB 2.0 Ports (USB01) VGA Port COM Port PS/2 Keyboard Port (Purple)
* To enable Multi-Streaming function, you need to connect a front panel audio cable to the front panel audio header. Please refer to below steps for the software setting of Multi-Streaming. For Windows XP: After restarting your computer, you will find Mixer tool on your system. Please select Mixer ToolBox , click Enable playback multi-streaming, and click ok. Choose 2CH or 4CH and then you are allowed to select Realtek HDA Primary output to use Rear Speaker and Front Speaker, or select Realtek HDA Audio 2nd output to use front panel audio. Then reboot your system. For Windows VistaTM: After restarting your computer, please double-click Realtek HD Audio Manager on the system tray. Set Speaker Configuration to Quadraphonic or Stereo. Click Device advanced settings, choose Make front and rear output devices playbacks two different audio streams simultaneously, and click ok. Then reboot your system.

1. Introduction

Thank you for purchasing ASRock 945GCM-S motherboard, a reliable motherboard produced under ASRocks consistently stringent quality control. It delivers excellent performance with robust design conforming to ASRocks commitment to quality and endurance. This Quick Installation Guide contains introduction of the motherboard and step-bystep installation guide. More detailed information of the motherboard can be found in the user manual presented in the Support CD.

Because the motherboard specifications and the BIOS software might be updated, the content of this manual will be subject to change without notice. In case any modifications of this manual occur, the updated version will be available on ASRock website without further notice. You may find the latest VGA cards and CPU support lists on ASRock website as well. ASRock website http://www.asrock.com If you require technical support related to this motherboard, please visit our website for specific information about the model you are using. www.asrock.com/support/index.asp

1.1 Package Contents

ASRock 945GCM-S Motherboard (Micro ATX Form Factor: 9.6-in x 7.5-in, 24.4 cm x 19.1 cm) ASRock 945GCM-S Quick Installation Guide ASRock 945GCM-S Support CD One 80-conductor Ultra ATA 66/100 IDE Ribbon Cable (Optional) One Serial ATA (SATA) Data Cable (Optional) One Serial ATA (SATA) HDD Power Cable (Optional) One I/O Panel Shield

Specifications

- Micro ATX Form Factor: 9.6-in x 7.5-in, 24.4 cm x 19.1 cm - LGA 775 for Intel Dual Core CoreTM 2 Extreme / CoreTM 2 Duo / Pentium Dual Core / Celeron, supporting Dual Core Wolfdale processors - Compatible with all FSB1333/1066/800/533MHz CPUs except Quad Core (see CAUTION 1) - Supports Hyper-Threading Technology (see CAUTION 2) - Supports Untied Overclocking Technology (see CAUTION 3) - Supports EM64T CPU - Northbridge: Intel 945GC - Southbridge: Intel ICH7 - Dual Channel DDR2 Memory Technology (see CAUTION 4) - 2 x DDR2 DIMM slots - Supports DDR2 667/533 non-ECC, un-buffered memory (see CAUTION 5) - Max. capacity of system memory: 4GB (see CAUTION 6) - 1 x PCI Express x16 slot - 1 x PCI Express x1 slot - 2 x PCI slots - Intel Graphics Media Accelerator 950 - Pixel Shader 2.0, DirectX 9.0 - Max. shared memory 224MB (see CAUTION 7) - 5.1 CH Windows VistaTM Premium Level HD Audio (Realtek ALC662 Audio Codec) - Realtek PCIE x1 LAN 8102EL - Speed: 10/100 Ethernet - Supports Wake-On-LAN I/O Panel - 1 x PS/2 Mouse Port - 1 x PS/2 Keyboard Port - 1 x Serial Port: COM1 - 1 x VGA Port - 4 x Ready-to-Use USB 2.0 Ports - 1 x RJ-45 LAN Port - HD Audio Jack: Line in / Front Speaker / Microphone - 4 x SATAII 3.0 Gb/s connectors (No Support for RAID and Hot Plug functions) (see CAUTION 8) - 1 x ATA100 IDE connector (supports 2 x IDE devices) - 1 x Floppy connector

Platform CPU

Chipset Memory

Expansion Slot

Graphics

Audio LAN

Rear Panel I/O

Connector

BIOS Feature
Support CD Unique Feature

Hardware Monitor

OS Certifications
- 1 x Print port header - CPU/Chassis FAN connector - 24 pin ATX power connector - 4 pin 12V power connector - CD in header - Front panel audio connector - 2 x USB 2.0 headers (support 4 USB 2.0 ports) (see CAUTION 9) - 4Mb AMI BIOS - AMI Legal BIOS - Supports Plug and Play - ACPI 1.1 Compliance Wake Up Events - Supports jumperfree - AMBIOS 2.3.1 Support - Supports Smart BIOS - Drivers, Utilities, AntiVirus Software (Trial Version) - Intelligent Energy Saver (see CAUTION 10) - Hybrid Booster: - CPU Frequency Stepless Control (see CAUTION 11) - ASRock U-COP (see CAUTION 12) - Boot Failure Guard (B.F.G.) - CPU Temperature Sensing - Chassis Temperature Sensing - CPU Fan Tachometer - Chassis Fan Tachometer - CPU Quiet Fan - Voltage Monitoring: +12V, +5V, +3.3V, Vcore - Microsoft Windows 2000 / XP / XP 64-bit / VistaTM / VistaTM 64-bit compliant - FCC, CE
* For detailed product information, please visit our website: http://www.asrock.com
WARNING Please realize that there is a certain risk involved with overclocking, including adjusting the setting in the BIOS, applying Untied Overclocking Technology, or using the thirdparty overclocking tools. Overclocking may affect your system stability, or even cause damage to the components and devices of your system. It should be done at your own risk and expense. We are not responsible for possible damage caused by overclocking.

CAUTION!

FSB1333-CPU will operate in overclocking mode. Under this situation, PCIE frequency will also be overclocked to 115MHz. Besides, if you want to overclock the CPU you adopt from FSB800 to FSB1066, you need to adjust the jumpers. Please refer to page 14 for proper jumper settings. 2. About the setting of Hyper Threading Technology, please check page 30 of User Manual in the support CD. 3. This motherboard supports Untied Overclocking Technology. Please read Untied Overclocking Technology on page 19 for details. 4. This motherboard supports Dual Channel Memory Technology. Before you implement Dual Channel Memory Technology, make sure to read the installation guide of memory modules on page 12 for proper installation. 5. Please check the table below for the CPU FSB frequency and its corresponding memory support frequency. CPU FSB Frequency Memory Support Frequency 1333 DDR2 533*, DDR1066 DDR2 533, DDR800 DDR2 400, DDR2 533, DDR533 DDR2 400, DDR* When you use a FSB1333-CPU on this motherboard, it will run at DDRif you adopt a DDRmemory module. 6. Due to the chipset limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows XP, Windows XP 64-bit, Windows VistaTM and Windows VistaTM 64-bit. 7. The maximum shared memory size is defined by the chipset vendor and is subject to change. Please check Intel website for the latest information. 8. Before installing SATAII hard disk to SATAII connector, please read the SATAII Hard Disk Setup Guide on page 23 of User Manual in the support CD to adjust your SATAII hard disk drive to SATAII mode. You can also connect SATA hard disk to SATAII connector directly. 9. Power Management for USB 2.0 works fine under Microsoft Windows VistaTM 64-bit / VistaTM / XP 64-bit / XP SP1 or SP2 / 2000 SP4. 10. Featuring an advanced proprietary hardware and software design, Intelligent Energy Saver is a revolutionary technology that delivers unparalleled power savings. In other words, it is able to provide exceptional power saving and improve power efficiency without sacrificing computing performance. Please visit our website for the operation procedures of Intelligent Energy Saver. ASRock website: http://www.asrock.com 11. Although this motherboard offers stepless control, it is not recommended to perform over-clocking. Frequencies other than the recommended CPU bus frequencies may cause the instability of the system or damage the CPU. 1.

12. While CPU overheat is detected, the system will automatically shutdown. Before you resume the system, please check if the CPU fan on the motherboard functions properly and unplug the power cord, then plug it back again. To improve heat dissipation, remember to spray thermal grease between the CPU and the heatsink when you install the PC system.

2. Installation

Pre-installation Precautions
Take note of the following precautions before you install motherboard components or change any motherboard settings. 1. Unplug the power cord from the wall socket before touching any component. Failure to do so may cause severe damage to the motherboard, peripherals, and/or components. 2. To avoid damaging the motherboard components due to static electricity, NEVER place your motherboard directly on the carpet or the like. Also remember to use a grounded wrist strap or touch a safety grounded object before you handle components. 3. Hold components by the edges and do not touch the ICs. 4. Whenever you uninstall any component, place it on a grounded antstatic pad or in the bag that comes with the component. 5. When placing screws into the screw holes to secure the motherboard to the chassis, please do not over-tighten the screws! Doing so may damage the motherboard.

2.1 CPU Installation

For the installation of Intel 775-LAND CPU, please follow the steps below.
775-Pin Socket Overview Before you insert the 775-LAND CPU into the socket, please check if the CPU surface is unclean or if there is any bent pin on the socket. Do not force to insert the CPU into the socket if above situation is found. Otherwise, the CPU will be seriously damaged.
Step 1. Open the socket: Step 1-1. Disengaging the lever by depressing down and out on the hook to clear retention tab.
Step 1-2. Rotate the load lever to fully open position at approximately 135 degrees. Step 1-3. Rotate the load plate to fully open position at approximately 100 degrees. Step 2. Insert the 775-LAND CPU: Step 2-1. Hold the CPU by the edges where are marked with black lines.

black line

Step 2-2. Orient the CPU with IHS (Integrated Heat Sink) up. Locate Pin1 and the two orientation key notches.
Pin1 orientation key notch orientation key notch Pin1 alignment key alignment key
775-Pin Socket 775-LAND CPU
For proper inserting, please ensure to match the two orientation key notches of the CPU with the two alignment keys of the socket.
Step 2-3. Carefully place the CPU into the socket by using a purely vertical motion. Step 2-4. Verify that the CPU is within the socket and properly mated to the orient keys. Step 3. Remove PnP Cap (Pick and Place Cap): Use your left hand index finger and thumb to support the load plate edge, engage PnP cap with right hand thumb and peel the cap from the socket while pressing on center of PnP cap to assist in removal.

1. It is recommended to use the cap tab to handle and avoid kicking off the PnP cap. 2. This cap must be placed if returning the motherboard for after service.
Step 4. Close the socket: Step 4-1. Rotate the load plate onto the IHS. Step 4-2. While pressing down lightly on load plate, engage the load lever. Step 4-3. Secure load lever with load plate tab under retention tab of load lever.
Installation of CPU Fan and Heatsink
For proper installation, please kindly refer to the instruction manuals of your CPU fan and heatsink. Below is an example to illustrate the installation of the heatsink for 775-LAND CPU. Step 1. Apply thermal interface material onto center of IHS on the socket surface.

Step 2.

Step 3. Step 4.
Place the heatsink onto the socket. Ensure fan cables are oriented on side closest to the CPU fan connector on the motherboard (CPU_FAN1, see page 2, No. 4). Align fasteners with the motherboard throughholes. Rotate the fastener clockwise, then press down on fastener caps with thumb to install and lock. Repeat with remaining fasteners.
If you press down the fasteners without rotating them clockwise, the heatsink cannot be secured on the motherboard.

Step 5. Step 6.

Connect fan header with the CPU fan connector on the motherboard. Secure excess cable with tie-wrap to ensure cable does not interfere with fan operation or contact other components.
2.3 Installation of Memory Modules (DIMM)
945GCM-S motherboard provides two 240-pin DDR2 (Double Data Rate 2) DIMM slots, and supports Dual Channel Memory Technology. For dual channel configuration, you always need to install two identical (the same brand, speed, size and chiptype) memory modules in the DDR2 DIMM slots to activate Dual Channel Memory Technology. Otherwise, it will operate at single channel mode.
1. 2. It is not allowed to install a DDR memory module into DDR2 slot; otherwise, this motherboard and DIMM may be damaged. If you install only one memory module or two non-identical memory modules, it is unable to activate the Dual Channel Memory Technology.

Installing a DIMM

Please make sure to disconnect power supply before adding or removing DIMMs or the system components.

Step 1. Step 2.

Unlock a DIMM slot by pressing the retaining clips outward. Align a DIMM on the slot such that the notch on the DIMM matches the break on the slot.
English English English English English
The DIMM only fits in one correct orientation. It will cause permanent damage to the motherboard and the DIMM if you force the DIMM into the slot at incorrect orientation.

Step 3.

Firmly insert the DIMM into the slot until the retaining clips at both ends fully snap back in place and the DIMM is properly seated. ASRock 945GCM-S Motherboard
2.4 Expansion Slots (PCI and PCI Express Slots)
There are 2 PCI slots and 2 PCI Express slots on this motherboard. PCI slots: PCI slots are used to install expansion cards that have the 32-bit PCI interface. PCIE slots: PCIE1 (PCIE x1 slot) is used for PCI Express cards with x1 lane width cards, such as Gigabit LAN card, SATA2 card, etc. PCIE2 (PCIE x16 slot) is used for PCI Express cards with x16 lane width graphics cards.
If you install the add-on PCI Express VGA card to PCIE2 (PCIE x16 slot), the onboard VGA will be disabled. If you install the add-on PCI Express VGA card to PCIE2 (PCIE x16 slot) and adjust the Internal Graphics Mode Select BIOS option to [Enabled], the onboard VGA will be enabled, and the primary screen will be onboard VGA.
Installing an expansion card
Step 1. Before installing the expansion card, please make sure that the power supply is switched off or the power cord is unplugged. Please read the documentation of the expansion card and make necessary hardware settings for the card before you start the installation. Remove the bracket facing the slot that you intend to use. Keep the screws for later use. Align the card connector with the slot and press firmly until the card is completely seated on the slot. Fasten the card to the chassis with screws.

Step 2. Step 3. Step 4.

2.5 Jumpers Setup
The illustration shows how jumpers are setup. When the jumper cap is placed on pins, the jumper is Short. If no jumper cap is placed on pins, the jumper is Open. The illustration shows a 3-pin jumper whose pin1 and pin2 are Short when jumper cap is placed on these 2 pins. Jumper Setting PS2_USB_PWR1

Description Short pin2, pin3 to enable (see p.2 No. 1) +5VSB (standby) for PS/2 or USB wake up events. Note: To select +5VSB, it requires 2 Amp and higher standby current provided by power supply. Clear CMOS
(CLRCMOS1, 2-pin jumper) (see p.2 No. 8)

2-pin jumper

Note: CLRCMOS1 allows you to clear the data in CMOS. The data in CMOS includes system setup information such as system password, date, time, and system setup parameters. To clear and reset the system parameters to default setup, please turn off the computer and unplug the power cord from the power supply. After waiting for 15 seconds, use a jumper cap to short 2 pins on CLRCMOS1 for 5 seconds. OC 800 Jumper
(OC 800, 3-pin jumper, see p.2 No. 27)
Default Note: If you want to overclock the FSB800-CPU (e.g. Cel400, E1000, E2000, E4000, E5000, E6000 series CPU) to FSB1066 on this motherboard, you need to adjust the jumpers. Please short pin2, pin3. Otherwise, the CPU may not work properly on this motherboard. Please refer to below jumper settings.
2.6 Onboard Headers and Connectors
Onboard headers and connectors are NOT jumpers. Do NOT place jumper caps over these headers and connectors. Placing jumper caps over the headers and connectors will cause permanent damage of the motherboard!

FDD connector

(33-pin FLOPPY1) (see p.2 No. 20) the red-striped side to Pin1
Note: Make sure the red-striped side of the cable is plugged into Pin1 side of the connector. Primary IDE connector (Blue)
(39-pin IDE1, see p.2 No. 7)
connect the blue end to the motherboard
connect the black end to the IDE devices 80-conductor ATA 66/100 cable
Note: Please refer to the instruction of your IDE device vendor for the details. Serial ATAII Connectors
(SATAII_1: see p.2, No. 13) (SATAII_2: see p.2, No. 12) (SATAII_3: see p.2, No. 10)

SATAII_1

(SATAII_4: see p.2, No. 11)
Serial ATA (SATA) Data Cable

(Optional)

SATAII_2
These Serial ATAII (SATAII) connectors support SATAII or SATA hard disk for internal storage devices. The current SATAII interface allows up to 3.0 Gb/s data transfer rate. Either end of the SATA data cable can be connected to the SATA / SATAII hard disk or the SATAII connector on the motherboard. Please connect the black end of SATA power cable to the power connector on each drive. Then connect the white end of SATA power cable to the power connector of the power supply.

SATAII_3

SATAII_4
Serial ATA (SATA) Power Cable
connect to the SATA HDD power connector
connect to the power supply

USB 2.0 Headers

(9-pin USB6_7) (see p.2 No. 15)
Besides four default USB 2.0 ports on the I/O panel, there are two USB 2.0 headers on this motherboard. Each USB 2.0 header can support two USB 2.0 ports.
(9-pin USB4_5) (see p.2 No. 16)

Print Port Header

(25-pin LPT1) (see p.2 No. 26)
This is an interface for print port cable that allows convenient connection of printer devices.

Internal Audio Connector

(4-pin CD1) (CD1: see p.2 No. 23)
This connector allows you to receive stereo audio input from sound sources such as a CD-ROM, DVD-ROM, TV tuner card, or MPEG card. This is an interface for front panel audio cable that allows convenient connection and control of audio devices.

Front Panel Audio Header

(9-pin HD_AUDIO1) (see p.2 No. 21)
1. High Definition Audio supports Jack Sensing, but the panel wire on the chassis must support HDA to function correctly. Please follow the instruction in our manual and chassis manual to install your system. 2. If you use AC97 audio panel, please install it to the front panel audio header as below: A. Connect Mic_IN (MIC) to MIC2_L. B. Connect Audio_R (RIN) to OUT2_R and Audio_L (LIN) to OUT2_L. C. Connect Ground (GND) to Ground (GND).
D. MIC_RET and OUT_RET are for HD audio panel only. You dont need to connect them for AC97 audio panel. E. Enter BIOS Setup Utility. Enter Advanced Settings, and then select Chipset Configuration. Set the Front Panel Control option from [Auto] to [Enabled]. F. Enter Windows system. Click the icon on the lower right hand taskbar to enter Realtek HD Audio Manager. For Windows 2000 / XP / XP 64-bit OS: Click Audio I/O, select Connector Settings , choose Disable front panel jack detection, and save the change by clicking OK. For Windows VistaTM / VistaTM 64-bit OS: Click the right-top Folder icon , choose Disable front panel jack detection, and save the change by clicking OK. G. To activate the front mic. For Windows 2000 / XP / XP 64-bit OS: Please select Front Mic as default record device. If you want to hear your voice through front mic, please deselect "Mute" icon in Front Mic of Playback portion. For Windows VistaTM / VistaTM 64-bit OS: Go to the "Front Mic" Tab in the Realtek Control panel. Click "Set Default Device" to make the Front Mic as the default record device.

System Panel Header

(9-pin PANEL1) (see p.2 No. 17)
This header accommodates several system front panel functions.

Chassis Speaker Header

(4-pin SPEAKER 1) (see p.2 No. 14)
Please connect the chassis speaker to this header.
(3-pin CHA_FAN1) (see p.2 No. 19)

CPU Fan Connector

(4-pin CPU_FAN1) (see p.2 No. 4)
Please connect a CPU fan cable to this connector and match the black wire to the ground pin.

Chassis Fan Connector

Please connect a chassis fan cable to this connector and match the black wire to the ground pin.
Though this motherboard provides 4-Pin CPU fan (Quiet Fan) support, the 3-Pin CPU fan still can work successfully even without the fan speed control function. If you plan to connect the 3-Pin CPU fan to the CPU fan connector on this motherboard, please connect it to Pin 1-3.
Pin 1-3 Connected 3-Pin Fan Installation

ATX Power Connector

(24-pin ATXPWR1) (see p.2, No. 6)
Please connect an ATX power supply to this connector.
Though this motherboard provides 24-pin ATX power connector, 12 it can still work if you adopt a traditional 20-pin ATX power supply. To use the 20-pin ATX power supply, please plug your power supply along with Pin 1 and Pin 13.
20-Pin ATX Power Supply Installation

ATX 12V Connector

(4-pin ATX12V1) (see p.2 No. 28)
Please note that it is necessary to connect a power supply with ATX 12V plug to this connector so that it can provides sufficient power. Failing to do so will cause the failure to power up.
AT (SAT AT (SAT Serial ATA (SATA) / Serial ATAII (SATAII) Hard Disks Installation
This motherboard adopts Intel ICH7 south bridge chipset that supports Serial ATA (SATA) / Serial ATAII (SATAII) hard disks. You may install SATA / SATAII hard disks on this motherboard for internal storage devices. This section will guide you to install the SATA / SATAII hard disks. STEP 1: Install the SATA / SATAII hard disks into the drive bays of your chassis. STEP 2: Connect the SATA power cable to the SATA / SATAII hard disk. STEP 3: Connect one end of the SATA data cable to the motherboards SATAII connector. STEP 4: Connect the other end of the SATA data cable to the SATA / SATAII hard disk.
2.8 Driver Installation Guide
To install the drivers to your system, please insert the support CD to your optical drive first. Then, the drivers compatible to your system can be auto-detected and listed on the support CD driver page. Please follow the order from up to bottom side to install those required drivers. Therefore, the drivers you install can work properly.

Technology Untied Overclocking Technology
This motherboard supports Untied Overclocking Technology, which means during overclocking, FSB enjoys better margin due to fixed PCI / PCIE buses. Before you enable Untied Overclocking function, please enter Overclock Mode option of BIOS setup to set the selection from [Auto] to [CPU, PCIE, Async.]. Therefore, CPU FSB is untied during overclocking, but PCI / PCIE buses are in the fixed mode so that FSB can operate under a more stable overclocking environment.
Please refer to the warning on page 6 for the possible overclocking risk before you apply Untied Overclocking Technology.

3. BIOS Information

The Flash Memory on the motherboard stores BIOS Setup Utility. When you start up the computer, please press <F2> during the Power-On-Self-Test (POST) to enter BIOS Setup utility; otherwise, POST continues with its test routines. If you wish to enter BIOS Setup after POST, please restart the system by pressing <Ctl> + <Alt> + <Delete>, or pressing the reset button on the system chassis. The BIOS Setup program is designed to be user-friendly. It is a menu-driven program, which allows you to scroll through its various sub-menus and to select among the predetermined choices. For the detailed information about BIOS Setup, please refer to the User Manual (PDF file) contained in the Support CD.
Software Support 4. Sof tware Suppor t CD information
This motherboard supports various Microsoft Windows operating systems: 2000 / XP / XP 64-bit / VistaTM / VistaTM 64-bit. The Support CD that came with the motherboard contains necessary drivers and useful utilities that will enhance motherboard features. To begin using the Support CD, insert the CD into your CD-ROM drive. It will display the Main Menu automatically if AUTORUN is enabled in your computer. If the Main Menu does not appear automatically, locate and double-click on the file ASSETUP. EXE from the BIN folder in the Support CD to display the menus.

1. Einfhrung

Wir danken Ihnen fr den Kauf des ASRock 945GCM-S Motherboard, ein zuverlssiges Produkt, welches unter den stndigen, strengen Qualittskontrollen von ASRock gefertigt wurde. Es bietet Ihnen exzellente Leistung und robustes Design, gem der Verpflichtung von ASRock zu Qualitt und Halbarkeit. Diese Schnellinstallationsanleitung fhrt in das Motherboard und die schrittweise Installation ein. Details ber das Motherboard finden Sie in der Bedienungsanleitung auf der Support-CD.
Da sich Motherboard-Spezifikationen und BIOS-Software verndern knnen, kann der Inhalt dieses Handbuches ebenfalls jederzeit gendert werden. Fr den Fall, dass sich nderungen an diesem Handbuch ergeben, wird eine neue Version auf der ASRock-Website, ohne weitere Ankndigung, verfgbar sein. Die neuesten Grafikkarten und untersttzten CPUs sind auch auf der ASRock-Website aufgelistet. ASRock-Website: http://www.asrock.com Wenn Sie technische Untersttzung zu Ihrem Motherboard oder spezifische Informationen zu Ihrem Modell bentigen, besuchen Sie bitte unsere Webseite: www.asrock.com/support/index.asp