2.4.3 CPU Confi guration.. 2-13 2.4.4 Chipset... 2-15 2.4.5 Onboard Devices Confi guration.. 2-16 2.4.6 PCI PnP... 2-18
2.5 Power menu.. 2-18 2.5.1 ACPI Aware.. 2-18 2.5.2 Suspend Modet.. 2-18 2.5.3 Respost Video on S3 Resume.. 2-18 2.5.4 ACPI 2.0 Support.. 2-28 2.5.5 ACPI APCI Support.. 2-18 2.5.6 APM Configuration..2-19 2.5.7 Hardware Monitor..2-20 2.6 Boot menu... 2-21 2.6.1 Boot Device Priority... 2-21 2.6.2 Boot Settings Confi guration.. 2-22 2.6.3 Security... 2-23 2.7 Exit menu... 2-25

Notices

Federal Communications Commission Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: This device may not cause harmful interference, and This device must accept any interference received including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with manufacturers instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment to an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help.
The use of shielded cables for connection of the monitor to the graphics card is required to assure compliance with FCC regulations. Changes or modifi cations to this unit not expressly approved by the part responsible for compliance could void the users authority to operate this equipment.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. This class B digital apparatus complies with Canadian ICES-003.

Chipset Front Side Bus Memory Expansion slots Storage

LAN USB Rear panel

BIOS features Special features

IEEE 1394

Internal connectors 4 x USB connectors 1 x CPU fan connector 1 x Chassis fan connector 1 x 24-pin EATX power connector 1 x 4-pin ATX 12 V power connector 1 x Internal audio connector 1 x Front panel audio connector 1 x S/PDIF out connector 1 x System panel connector Device drivers ASUS PC Probe II ASUS Live Update utility uATX form factor: 9.6 in x 9.6 in
Support CD contents Form Factor
*Specifications are subject to change without notice.
This chapter lists the hardware setup procedures that you have to perform when installing system components. It includes description of the jumpers and connectors on the motherboard.

Hardware information

Before you proceed
Take note of the following precautions before you install motherboard components or change any motherboard settings.
Unplug the power cord from the wall socket before touching any component. Use a grounded wrist strap or touch a safely grounded object or a metal object, such as the power supply case, before handling components to avoid damaging them due to static electricity Hold components by the edges to avoid touching the ICs on them. Whenever you uninstall any component, place it on a grounded antistatic pad or in the bag that came with the component. Before you install or remove any component, ensure that the ATX power supply 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.
Chapter 1: Hardware information

Motherboard overview

Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits into it. Refer to the chassis documentation before installing the motherboard.
Make sure to unplug the power cord before installing or removing the motherboard. Failure to do so can cause you physical injury and damage motherboard components.

Placement direction

When installing the motherboard, make sure that you place it into the chassis in the correct orientation. The edge with external ports goes to the rear part of the chassis as indicated in the image below.

Screw holes

Place six (6) screws into the holes indicated by circles to secure the motherboard to the chassis.
Do not overtighten the screws! Doing so can damage the motherboard.

ASUS P5SD2-FM

Place this side towards the rear of the chassis

Motherboard layout

23.0 cm (9.0 in)

CHA_FAN ATX12V

LGA775
DDR2 DIMM1 (64 bit,240-pin module)

SPDIF_O1

DDR2 DIMM2 (64 bit,240-pin module)

Super I/O

FLOPPY

CPU_FAN

F_USB12

USBPW12 USBPW34

REALTEK

SiS 649DX

SEC_IDE

PCIEX16

VIA VT6307

PCI1 PCI2

PCIEX1_1

SATA2 SATA4

SiS 966
CR2032 3V Lithium Cell CMOS Power USBPW56 USBPW78 PLED CLRTC

4Mb BIOS

SATA1 SATA3

PWDSKP BIOSREC

PRI_IDE

SPDIF_O2

BUZZER

ALC880

AAFP AUX IE1394_1

USB56 USB78

SPEAKER F_PANEL

EATXPWR

LAN_USB34

24.5 cm (9.6 in)

Layout Contents

Page 1-14 1-20 1-20

1. DDR DIMM slots 2. PCI slots 3. PCI Express slot
Jumpers 1. Clear RTC RAM (CLRTC) 2. USB device wake-up (3-pin USBPW12, USBPW34, USBPW56, USBPW78)

Page 1-21 1-22

Rear panel connectors 1. Serial port 2. IEEE 1394a port 3. LAN (RJ-45) port 4. Center/Subwoofer port 5. Side Speaker Out port 6. Line In port 7. Line Out port 8. Microphone port 9. Rear Speaker Out port 10. USB 2.0 ports 3 and 4 11. USB 2.0 ports 1 and 2 12. PS/2 keyboard port
Page 1-23 1-23 1-23 1-23 1-23 1-23 1-23 1-23 1-24 1-24 1-24 1-24
Internal connectors 1. Floppy disk drive connector (34-1 pin FLOPPY) 2. Power LED connector (3-1 pin PLED) 3. IDE connectors (40-1 pin PRI_IDE, SEC_IDE) 4. Serial ATA connectors (7-pin SATA1 [black], SATA2 [black]) 5. CPU and Chassis fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN) 6. Speaker out connector (4-pin SPEAKER) 7. USB connectors (10-1 pin USB56, USB78) 8. ATX power connector (24-pin EATXPWR, 4-pin ATX12V) 9. Internal audio connector (4-pin AUX) 10. Front panel audio connector (10-1 pin FP_AUDIO) 11. System panel connector (10-1 pin F_PANEL) - System power LED (Green 2-pin PLED) - Hard disk activity (Red 2-pin HDLED) - Power/Soft-off button(Black 2-pin PWRSW) - Reset switch (Blue 2-pin RESET)
Page 1-25 1-25 1-26 1-27 1-28 1-28 1-29 1-30 1-31 1-31 1-32
Central Processing Unit (CPU)
The motherboard comes with a surface mount LGA775 socket designed for the Intel Pentium 4 processor in the 775-land package.
Your boxed Intel Pentium 4 LGA775 processor package should come with installation instructions for the CPU, heatsink, and the retention mechanism. If the instructions in this section do not match the CPU documentation, follow the latter. Upon purchase of the motherboard, make sure that the PnP cap is on the socket and the socket contacts are not bent. Contact your retailer immediately if the PnP cap is missing, or if you see any damage to the PnP cap/socket contacts/motherboard components. ASUS will shoulder the cost of repair only if the damage is shipment/transit-related. Keep the cap after installing the motherboard. ASUS will process Return Merchandise Authorization (RMA) requests only if the motherboard comes with the cap on the LGA775 socket. The product warranty does not cover damage to the socket contacts resulting from incorrect CPU installation/removal, or misplacement/loss/ incorrect removal of the PnP cap.

When you buy a boxed Intel Pentium 4 processor, the package includes the CPU fan and heatsink assembly. If you buy a CPU separately, make sure that you use only Intel-certified multi-directional heatsink and fan. Your Intel Pentium 4 LGA775 heatsink and fan assembly comes in a pushpin design and requires no tool to install. If you purchased a separate CPU heatsink and fan assembly, make sure that you have properly applied Thermal Interface Material to the CPU heatsink or CPU before you install the heatsink and fan assembly.
Make sure that you have installed the motherboard to the chassis before you install the CPU fan and heatsink assembly.
To install the CPU heatsink and fan: 1. Place the heatsink on top of the installed CPU, making sure that the four fasteners match the holes on the motherboard.
Orient the heatsink and fan assembly such that the CPU fan cable is closest to the CPU fan connector.
Motherboard hole Narrow end of the groove Fastener
Make sure to orient each fastener with the narrow end of the groove pointing outward. (The photo shows the groove shaded for emphasis.)
Push down two fasteners at a time in a diagonal sequence to secure the heatsink and fan assembly in place.
Connect the CPU fan cable to the connector on the motherboard labeled CPU_FAN.
CPU FAN PWM CPU FAN IN CPU FAN PWR GND
P5SD2-FM CPU Fan Connector
Do not forget to connect the CPU fan connector! Hardware monitoring errors can occur if you fail to plug this connector.
Uninstalling the CPU heatsink and fan
To uninstall the CPU heatsink and fan: 1. Disconnect the CPU fan cable from the connector on the motherboard. Rotate each fastener counterclockwise.
Pull up two fasteners at a time in a diagonal sequence to disengage the heatsink and fan assembly from the motherboard.
Remove the heatsink and fan assembly from the motherboard.
Rotate each fastener clockwise to reset the orientation.

Narrow end of the groove

The narrow end of the groove should point outward after resetting. (The photo shows the groove shaded for emphasis.)

System memory

12. S/PDIF out jack. This jack connects to external audio output devices.

Internal connectors

Floppy disk drive connector (34-1 pin FLOPPY) This connector is for the provided floppy disk drive (FDD) signal cable. Insert one end of the cable to this connector, then connect the other end to the signal connector at the back of the floppy disk drive.
Pin 5 on the connector is removed to prevent incorrect cable connection when using an FDD cable with a covered Pin 5.
NOTE: Orient the red markings on the floppy ribbon cable to PIN 1.
P5SD2-FM Floppy Disk Drive Connector
Power LED connector (3-1 pin PLED) This 3-1 pin connector is for the system power LED. Connect the 3-pin power LED cable from the system chassis to this connector. The LED lights up when you turn on the system power, and blinks when the system is in sleep mode.

P5SD2-FM PLED Connector

PLED+ NC PLED-
IDE connectors (40-1 pin PRI_IDE, SEC_IDE) These connectors are for a Ultra DMA 100/66 signal cable. The Ultra DMA 100/ 66 signal cable has three connectors: a blue connector for the primary IDE connector on the motherboard, a black connector for an Ultra DMA 100/66 IDE slave device (optical drive/hard disk drive), and a gray connector for an Ultra DMA 100/66 IDE master device (hard disk drive). If you install two hard disk drives, you must configure the second drive as a slave device by setting its jumper accordingly. Refer to the hard disk documentation for the jumper settings.
Pin 20 on the IDE connector is removed to match the covered hole on the Ultra DMA cable connector. This prevents incorrect insertion when you connect the IDE cable. Use the 80-conductor IDE cable for Ultra DMA 100/66 IDE devices.
NOTE: Orient the red markings (usually zigzag) on the IDE ribbon cable to PIN 1.

P5SD2-FM IDE Connectors

Serial ATA connectors (7-pin SATA1 [blue], SATA2 [blue], SATA3 [black], SATA4 [black]) These connectors are for the Serial ATA signal cables for Serial ATA hard disk drives.
These connectors are set to Standard IDE configuration by default. In Standard IDE mode, you can connect Serial ATA boot/data hard disk drives to these connectors.
GND RSATA_RXN1 RSATA_RXP1 GND RSATA_TXN1 RSATA_TXP1 GND
GND RSATA_RXN3 RSATA_RXP3 GND RSATA_TXN3 RSATA_TXP3 GND

P5SD2-FM SATA connectors

Important notes on Serial ATA The Serial ATA RAID feature (RAID 0, RAID 1) is available only if you are using Windows XP. Install the Windows XP Service Pack 1 before using Serial ATA. Use only a maximum of two ports for each RAID 0 or RAID 1 set. Plug your Serial ATA boot disk on the master port (SATA1 and SATA2) to support S3 function. Refer to the table below for details.

Serial ATA Master/Slave connectors
Connector SATA1 , SATA2 SATA3, SATA4 Color Blue Black Setting Master Slave Use Boot Disk Data Disk
GND RSATA_RXN4 RSATA_RXP4 GND RSATA_TXN4 RSATA_TXP4 GND
GND RSATA_RXN2 RSATA_RXP2 GND RSATA_TXN2 RSATA_TXP2 GND
CPU and Chassis fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN) The fan connectors support cooling fans of 350 mA ~ 2000 mA (24 W max.) or a total of 1 A ~ 3.48 A (41.76 W max.) at +12 V. Connect the fan cables to the fan connectors on the motherboard, making sure that the black wire of each cable matches the ground pin of the connector.
Do not forget to connect the fan cables to the fan connectors. Insufficient air flow inside the system may damage the motherboard components. These are not jumpers! DO NOT place jumper caps on the fan connectors.

CHA_FAN

Rotation +12V GND

P5SD2-FM Fan Connectors

Speaker out connector (4-pin SPEAKER) This connector is for the case-mounted speaker and allows you to hear system beeps and warnings.

SPEAKER

P5SD2-FM Speaker Out Connector

GND Speak Out

USB connectors (10-1 pin USB56, USB78) These connectors are for USB 2.0 ports. Connect the USB/GAME module cable to any of these connectors, then install the module to a slot opening at the back of the system chassis. These USB connectors comply with USB 2.0 specification that supports up to 480 Mbps connection speed.
USB+5V USB_P6USB_P6+ GND NC

USB+5V USB_P5USB_P5+ GND

USB+5V USB_P7USB_P7+ GND
P5SD2-FM USB 2.0 Connectors
Never connect a 1394 cable to the USB connectors. Doing so will damage the motherboard!
Digital audio connector (3 pin SPDIF_O2) This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port. Connect the S/PDIF module cable to this connector, then install the module to a slot opening at the back of the system chassis.
The S/PDIF module is purchased separately.

GND SIG +5V

P5SD2-FM Digital Audio Connector
USB+5V USB_P8USB_P8+ GND NC
ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) These connectors are for an ATX power supply. The plugs from the power supply are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit.
We recommend that you use an ATX 12 V Specification 2.0-compliant power supply unit (PSU) with a minimum of 350 W power rating. This PSU type has 24-pin and 4-pin power plugs. If you intend to use a PSU with 20-pin and 4-pin power plugs, make sure that the 20-pin power plug can provide at least 15A on +12V and that the PSU has a minimum power rating of 350 W. The system may become unstable or may not boot up if the power is inadequate. Do not forget to connect the 4-pin ATX +12 V power plug; otherwise, the system will not boot up. We recommend that you use a PSU with higher power output when configuring a system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate. The ATX 12 V Specification 2.0-compliant PSU passed the motherboard power requirement test with the following configuration: CPU Memory Graphics card Parallel ATA devices Serial ATA device Optical drives SCSI devices : : : : : : : Intel Pentium 4 3.6 GHz 512 MB DDR (x 2) PCI Express x16 Nvidia EN5900 IDE hard disk drive (x 2) SATA hard disk drive CD-ROM (x 2) SCSI card and SCSI hard disk drive

EATXPWR ATX12V

+12V DC GND
P5SD2-FM ATX Power Connectors
+3 Volts +12 Volts +12 Volts +5V Standby Power OK Ground +5 Volts Ground +5 Volts Ground +3 Volts +3 Volts
Ground +5 Volts +5 Volts +5 Volts -5 Volts Ground Ground Ground PSON# Ground -12 Volts +3 Volts
10. Internal audio connector (4-pin AUX) This connector allows you to receive stereo audio input from sound sources such as a CD-ROM, TV tuner, or MPEG card.

AUX (White)

Right Audio Channel Left Audio Channel
P5SD2-FM Internal Audio Connector
Front panel audio connector (10-1 pin FP_AUDIO) This connector is for a chassis-mounted front panel audio I/O module that supports AC 97 audio standard. Connect one end of the front panel audio I/ O module cable to this connector.
Azalia compliant definition
GND PRESENCE# SENSE1_RETUR SENSE2_RETUR
Legacy AC97 compliant definition
AGND +5VA BLINE_OUT_R BLINE_OUT_L
PORT1 L PORT1 R PORT2 R SENSE_SEND PORT2 L
P5SD2-FM Analog Front Panel Connector
MIC2 MICPWR Line out_R NC Line out_L

Ground

12. System panel connector (10-1 pin F_PANEL) This connector supports several chassis-mounted functions.

PLED PWRBTN

F_PANEL

HDLED RESET

P5SD2-FM System Panel Connector
The sytem panel connector is color-coded for easy connection. Refer to the connector description below for details.
System power LED (Green 2-pin PLED) This 3-pin connector is for the system power LED. Connect the chassis power LED cable to this connector. The system power LED lights up when you turn on the system power, and blinks when the system is in sleep mode. Hard disk drive activity (Red 2-pin HDLED) This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable to this connector. This LED lights up or flashes when data is read from or written to the HDD. Power/Soft-off button (Black 2-pin PWRSW) This connector is for the system power button. Pressing the power button turns the system ON or puts the system in SLEEP or SOFT-OFF mode depending on the BIOS settings. Pressing the power switch for more than four seconds while the system is ON turns the system OFF. Reset button (Blue 2-pin RESET) This 2-pin connector is for the chassis-mounted reset button for system reboot without turning off the system power.

HDLED+ HDLEDGround Reset

PLED+ PLEDPWR GND
This chapter tells how to change the system settings through the BIOS Setup menus. Detailed descriptions of the BIOS parameters are also provided.

BIOS setup

BIOS setup program

Scroll bar

Advanced PCI/PnP Settings WARNING: Setting wrong values in below sections may cause system to malfunction. Plug And Play O/S PCI Latency Timer Allocate IRQ to PCI VGA Palette Snooping PCI IDE BusMaster [No] [64] [Yes] [Disabled] [Enabled]
A scroll bar appears on the right side of a menu screen when there are items that do not fit on the screen. Press the Up/ Down arrow keys or <Page Up> /<Page Down> keys to display the other items on the screen.

General help

At the top right corner of the menu screen is a brief description of the selected item.

Main menu

When you enter the BIOS Setup program, the Main menu screen appears, giving you an overview of the basic system information.
Refer to section 2.2.1 BIOS menu screen for information on the menu screen items and how to navigate through them.
System Time System Date Legacy Diskette A Primary IDE Master Primary IDE Slave Secondary IDE Master Secondary IDE Slave Third IDE Master Third IDE Slave Fourth IDE Master Fourth IDE Slave SATA Mode Selection System Information : : : : : : : : :
[10:55:25] [FRI,03/10/2006] [Disabled] [ST320410A] [ASUS CD-S520/A] [Not Detected] [Not Detected] [Not Detected] [Not Detected] [Not Detected] [Not Detected] [4P(IDE)+4S(IDE)]
Use [ENTER], [TAB] or [SHIFT-TAB] to select a field. Use [+] or [-] to configure the System time.

System Time [xx:xx:xx]

Allows you to set the system time.
System Date [Day xx/xx/xxxx]
Allows you to set the system date.
Legacy Diskette A [Disabled]
Sets the type of floppy drive installed. Configuration options: [Disabled] [360K, 5.25 in.] [1.2M , 5.25 in.] [720K , 3.5 in.] [1.44M, 3.5 in.] [2.88M, 3.5 in.]
Primary, Secondary, Third, and Fourth IDE Master/Slave
While entering Setup, the BIOS automatically detects the presence of IDE devices. There is a separate sub-menu for each IDE device. Select a device item then press <Enter> to display the IDE device information.
Primary IDE Master Device Vendor Size LBA Mode Block Mode PIO Mode Async DMA Ultra DMA SMART Monitoring : : : : : : : : : Hard Disk ST320410A 20.0GB Supported 16 Sectors 4 MultiWord DMA-2 Ultra DMA-2 Supported
Select the type of device connected to the system.
Type [Auto] LBA/Large Mode [Auto] Block(Multi-sector Transfer) M [Auto] PIO Mode [Auto] DMA Mode [Auto] Smart Monitoring [Auto] 32Bit Data Transfer [Enabled]
The BIOS automatically detects the values opposite the dimmed items (Device, Vendor, Size, LBA Mode, Block Mode, PIO Mode, Async DMA, Ultra DMA, and SMART monitoring). These values are not user-configurable. These items show N/ A if no IDE device is installed in the system.

Type [Auto]

Selects the type of IDE drive. Setting to Auto allows automatic selection of the appropriate IDE device type. Select CDROM if you are specifically configuring a CD-ROM drive. Select ARMD (ATAPI Removable Media Device) if your device is either a ZIP, LS-120, or MO drive. Configuration options: [Not Installed] [Auto] [CDROM] [ARMD]

LBA/Large Mode [Auto]

Enables or disables the LBA mode. Setting to Auto enables the LBA mode if the device supports this mode, and if the device was not previously formatted with LBA mode disabled. Configuration options: [Disabled] [Auto]
Block (Multi-sector Transfer) [Auto]
Enables or disables data multi-sectors transfers. When set to Auto, the data transfer from and to the device occurs multiple sectors at a time if the device supports multi-sector transfer feature. When set to [Disabled], the data transfer from and to the device occurs one sector at a time. Configuration options: [Disabled] [Auto]

PIO Mode [Auto]

Selects the PIO mode. Configuration options: [Auto] [0] [1] [2] [3] [4]

DMA Mode [Auto]

Automatically sets the DMA mode.

SMART Monitoring [Auto]

Sets the Self-Monitoring, Analysis, and Reporting Technology. Configuration options: [Auto] [Disabled] [Enabled]
32Bit Data Transfer [Enabled]
Enables or disables 32-bit data transfer. Configuration options: [Disabled] [Enabled]
SATA Mode Selection [4P(IDE)+4S(IDE)]
Allows you to select the SATA mode. Configuration options: [Disabled] [4P(IDE)+4S(RAID)] [4P(IDE)+4S(IDE)] [2P2S(IDE)+2S(RAID)] [2P2S(IDE)+2S(AHCI)] [4P(IDE)+2S(RAID)] [4P(IDE)+2S(AHCI)]

System Information

This menu gives you an overview of the general system specifications. The BIOS automatically detects the items in this menu.
AMIBIOS Version Build Date Processor Type Speed Count

: 0121 : 01/17/06

: Genuine Intel(R) CPU 2.80 GHz : 2800 MHz : 2
System Memory Size : 256 MB

AMI BIOS

Displays the auto-detected BIOS information.

Processor

Displays the auto-detected CPU specification.

System Memory

Displays the auto-detected system memory.

Advanced menu

The Advanced menu items allow you to change the settings for the CPU and other system devices.
Take caution when changing the settings of the Advanced menu items. Incorrect field values can cause the system to malfunction.
CPU Configuration Chipset Onboard Devices Configuration PCI PnP USB Configuration

Configure CPU.

CPU Configuration
The items in this menu show the CPU-related information that the BIOS automatically detects.
Configure advanced CPU Settings Manufacturer : Intel Brand String : Genuined Intel (R) CPU 2.80 GHz Frequency : 2800 MHz FSB Speed : 800 MHz Cache L1 : 32 KB Cache L2 : 2048 KB Cache L3 : 0 KB Ratio Status: Unlocked (Max:14, Min:14) Ratio Actual Value : 14 Ratio CMOS Setting: [ 28] Max CPUID Value Limit: [Disabled] Execute Disable Function [Disabled] Hardware Prefetcher [Enabled] Adjacent Cache Line Prefetch [Enabled] CPU Internal Thermal Control [Auto]

Sets the ratio between CPU Core Clock and the FSB Frequency. NOTE: If an invalid ratio is set in CMOS then actual and setpoint values may differ.

Ratio CMOS Setting [14]

Sets the ratio between the CPU Core Clock and the Front Side Bus frequency. The default value of this item is auto-detected by BIOS. Use the <+> or <-> keys to adjust the values.
You can only adjust the Ratio CMOS setting if you installed an unlocked CPU. Refer to the CPU documentation for details.
Max CPUID Value Limit [Disabled]
Enable this item to boot legacy operating systems that cannot support CPUs with extended CPUID functions. Configuration options: [Disabled] [Enabled]
Execute Disable Function [Disabled]
Enableds or disableds the Execute Disable function0. This item appears only when you install a processor with the Execute Disable function. Configuration options: [Disabled] [Enabled]
Hardware Prefetcher [Enabled]
Enables or disables the Hardware Prefetcher feature. Configuration options: [Disabled] [Enabled]
Adjacent Cache Line Prefetcher [Enabled]
Enables or disables the Adjacent Cache Line Prefetcher feature. Configuration options: [Disabled] [Enabled]
CPU Internal Thermal Control [Auto]
Disables or sets the CPU internal thermal control. Configuration options: [Auto] [Disabled] Scroll down the screen to display the following items.
Auto Detect CPU Frequency [Enabled]
Enableds or disables the Auto Detect CPU Frequency feature. Configuration options: [Disabled] [Enabled] CPU Frequency Setting [200] Allows you to set the CPU Frequency. Configuration options: [100] ~ [355]

Chipset

The Chipset menu allows you to change the advanced chipset settings. Select an item then press <Enter> to display the sub-menu.
NorthBridge SIS649 Configuration SouthBridge SiS965/SiS965L Configuration

Options for NB

NorthBridge SIS649 Chipset Configuration
Primary Graphics Adapter [PCI Express] CPU FSB Set To Chipset Timing [FSB: 800MHz] Auto Detect DRAM Frequency [Enabled] CPU:DRAM Frequency Ratio [3:2] Real CPU FSB:DRAM = 800(200*4): 533(266*2) MHz DRAM CAS# Latency [By SPD] Dual Core PATCH [Enabled]
Primary Graphics Adapter [PCI Express] Allows selection of the graphics controller to use as a primary boot device. Configuration options: [PCI] [PCI Express] CPU FSB Set To Chipset Timing [FSB: 533MHz] Displays auto-detected CPU FSB information. Auto Detect DRAM Frequency [Enabled] When set to [Enabled], this allows the BIOS to detect the DRAM frequency automatically. Configuration options: [Disabled] [Enabled] CPU:DRAM Frequency Ratio [DDR 400 MHz] Displays auto-detected CPU and DRAM frequency ratio information. Real CPU FSB:DRAM = 532(133*4): 400(200*2) MHz Displays auto-detected CPU FSB and DRAM frequency information. DRAM CAS# Latency [By SPD] Controls the latency between the SDRAM read command and the time the data actually becomes available. Configuration options: [By SPD] [2T] [2.5T] [3T]

No: Lets the BIOS configure all the devices in the system. Yes: Lets the operating system configure Plug and Play (PnP) devices not required for boot if your system has a Plug and Play operating system.

DMA DMA DMA DMA DMA DMA

Channel Channel Channel Channel Channel Channel
[PCI [PCI [PCI [PCI [PCI [PCI
Device] Device] Device] Device] Device] Device]

Clear NVRAM [No]

When set to [No], the BIOS clears NVRAM during system boot. Configuration options: [No] [Yes]

Plug and Play O/S [No]

When set to [No], BIOS configures all the devices in the system. When set to [Yes] and if you install a Plug and Play operating system, the operating system configures the Plug and Play devices not required for boot. Configuration options: [No] [Yes]
Allocate IRQ to PCI VGA [Yes]
When set to [Yes], BIOS assigns an IRQ to PCI VGA card if the card requests for an IRQ. When set to [No], BIOS does not assign an IRQ to the PCI VGA card even if requested. Configuration options: [Yes] [No]
OffBoard PCI/ISA IDE Card [Auto]
Allows you to set the PCI slot number that is holding the PCI IDE card. Configuration options: [Auto] [PCI Slot1] [PCI Slot2] [PCI Slot3] [PCI Slot4] [PCI Slot5] [PCI Slot6 ]
IRQ-xx assigned to [PCI Device]
When set to [PCI Device], the specific IRQ is free for the use of PCI/PnP devices. When set to [Reserved], the IRQ is reserved for legacy ISA devices. Configuration options: [PCI Device] [Reserved]
DMA Channel x [PCI Device]
When set to [PCI Device], the specific DMA channel is free for the use of PCI/PnP devices. When set to [Reserved], the IRQ is reserved for legacy ISA devices. Configuration options: [PCI Device] [Reserved]

USB Configuration

The items in this menu allow you to change the USB-related features. Select an item then press <Enter> to display the configuration options.
USB Configuration Module Version - 2.24.0-11.4 USB Devices Enabled: None OnBoard SIS USB1.1 DEVICE OnBoard SIS USB2.o DEVICE Legacy USB Support USB 2.0 Controller Mode BIOS EHCI Hand-off [Enabled] [Enabled] [Enabled] [HiSpeed] [Enabled]
The Module Version and USB Devices Enabled items show the auto-detected values. If no USB device is detected, the item shows None.
Onboard SIS USB1.1 DEVICE [Enabled]
Allows you to enable or disable the OnBoard SIS USB1.1 Device. Configuration options: [Disabled] [Enabled]
Onboard SIS USB2.0 DEVICE [Enabled]
Legacy USB Support [Enabled]
Allows you to enable or disable support for USB devices on legacy operating systems (OS). Setting to [Auto] allows the system to detect the presence of USB devices at startup. If detected, the USB controller legacy mode is enabled. If no USB device is detected, the legacy USB support is disabled. Configuration options: [Disabled] [Enabled] [Auto]

If you forget your BIOS password, you can clear it by erasing the CMOS Real Time Clock (RTC) RAM. See section 1.6 Jumpers for information on how to erase the RTC RAM.
After you have set a supervisor password, the other items appear to allow you to change other security settings.
Security Settings Supervisor Password User Password : Not Installed : Not Installed [Full Access] [Setup] [Disabled]
Change Supervisor Password User Access Level Change User Password Clear User Password Password Check Boot Sector Virus Protection
User Access Level (Full Access]
This item allows you to select the access restriction to the Setup items. Configuration options: [No Access] [View Only] [Limited] [Full Access] No Access prevents user access to the Setup utility. View Only allows access but does not allow change to any field. Limited allows changes only to selected fields, such as Date and Time. Full Access allows viewing and changing all the fields in the Setup utility.

Change User Password

Select this item to set or change the user password. The User Password item on top of the screen shows the default Not Installed. After you set a password, this item shows Installed. To set a User Password: 1. 2. 3. Select the Change User Password item and press <Enter>. On the password box that appears, type a password composed of at least six letters and/or numbers, then press <Enter>. Confirm the password when prompted.
The message Password Installed appears after you set your password successfully. To change the user password, follow the same steps as in setting a user password.

Clear User Password

Select this item to clear the user password.

Password Check [Setup]

When set to [Setup], BIOS checks for user password when accessing the Setup utility. When set to [Always], BIOS checks for user password both when accessing Setup and booting the system. Configuration options: [Setup] [Always]

Exit menu

The Exit menu items allow you to load the optimal or failsafe default values for the BIOS items, and save or discard your changes to the BIOS items.
Exit Options Exit & Save Changes Exit & Discard Changes Discard Changes Load Setup Defaults
Exit system setup after saving the changes. F10 key can be used for this operation.
Pressing <Esc> does not immediately exit this menu. Select one of the options from this menu or <F10> from the legend bar to exit.

Exit & Save Changes

Once you are finished making your selections, choose this option from the Exit menu to ensure the values you selected are saved to the CMOS RAM. An onboard backup battery sustains the CMOS RAM so it stays on even when the PC is turned off. When you select this option, a confirmation window appears. Select Yes to save changes and exit.
If you attempt to exit the Setup program without saving your changes, the program prompts you with a message asking if you want to save your changes before exiting. Press <Enter> to save the changes while exiting.
Exit & Discard Changes
Select this option only if you do not want to save the changes that you made to the Setup program. If you made changes to fields other than System Date, System Time, and Password, the BIOS asks for a confirmation before exiting.

Discard Changes

This option allows you to discard the selections you made and restore the previously saved values. After selecting this option, a confirmation appears. Select Yes to discard any changes and load the previously saved values.

Load Setup Defaults

This option allows you to load the default values for each of the parameters on the Setup menus. When you select this option or if you press <F5>, a confirmation window appears. Select Yes to load default values. Select Exit & Save Changes or make other changes before saving the values to the non-volatile RAM.