Advanced BIOS Features... 44 Advanced Chipset Features... 47 Integrated Peripherals... 49 Power Management Setup... 54 PnP/PCI Configurations.... 57 PC Health Status... 58 Frequency/Voltage Control.. 60 Load Fail-Safe Defaults.... 61 Load Optimized Defaults... 62 Set Supervisor/User Password... 63 Save & Exit Setup.... 64 Exit Without Saving... 65
Chapter 4 Technical Reference... 67
@BIOS Introduction... 67 Flash BIOS Method Introduction... 68 2- / 4- / 6-Channel Audio Function Introuction.. 78 Xpress Recovery Introduction.. 84
Chapter 5 Appendix.... 89

Item Checklist

The N400 Pro2 / N400 Series motherboard CD for motherboard driver & utility The N400 Pro2 / N400 Series user's manual Quick PC Installation Guide GigaRAID manual (j) SATA RAID manual (j) GC-SATA Card (optional)
(Manual; SATA cable x 1; Power cable x 1)
IDE cable x 1 / Floppy cable x 1(kl) Serial ATA cable x 2 (j) IEEE1394 cable x 1 (j) 2 Port USB Cable x 1 Audio Combo Kit x 1 (j)
(SURROUND-Kit + SPDIF Out Kit)
I/O Shield Motherboard Settings Label ATX 12V Cable (*)
IDE cable x 3 / Floppy cable x 1 (j)

3. 4. 5.

Computer motherboards and expansion cards contain very delicate Integrated Circuit (IC) chips. To protect them against damage from static electricity, you should follow some precautions whenever you work on your computer. Unplug your computer when working on the inside. Use a grounded wrist strap before handling computer components. If you do not have one, touch both of your hands to a safely grounded object or to a metal object, such as the power supply case. Hold components by the edges and try not touch the IC chips, leads or connectors, or other components. Place components on a grounded antistatic pad or on the bag that came with the components whenever the components are separated from the system. Ensure that the ATX power supply is switched off before you plug in or remove the ATX power connector on the motherboard.
Installing the motherboard to the chassis.
If the motherboard has mounting holes, but they don't line up with the holes on the base and there are no slots to attach the spacers, do not become alarmed you can still attach the spacers to the mounting holes. Just cut the bottom portion of the spacers (the spacer may be a little hard to cut off, so be careful of your hands). In this way you can still attach the motherboard to the base without worrying about short circuits. Sometimes you may need to use the plastic springs to isolate the screw from the motherboard PCB surface, because the circuit wire may be near by the hole. Be careful, don't let the screw contact any printed circuit write or parts on the PCB that are near the fixing hole, otherwise it may damage the board or cause board malfunctioning.

(*) If this "ATX_12V connector" is not connected, system cannot boot. j For GA-7N400 Pro2 only. k For GA-7N400 only. l For GA-7N400-L only. N400 Pro2 / N400 Series Motherboard -4-

Chapter 1 Introduction

Features Summary
Form Factor Motherboard CPU 30.5cm x 24.4cm ATX size form factor, 4 layers PCB N400 Pro2/N400 Series: GA-7N400 Pro2 / GA-7N400 / GA-7N400-L Socket A processor for AMD Athlon / Athlon XP / Duron (K7) 128K L1 & 256K/64K L2 cache on die 400/333/266/200 MHz FSB Supports 1.4GHz and faster nVIDIA nForce 2 Ultra 400 Memory/AGP/ PCI Controller (PAC) nVIDIA nForce 2 MCP Integrated Peripheral Controller (PSIPC) 4 184-pin DDR DIMM sockets Supports Dual Channel DDR400/DDR333/DDR266 DIMM Supports 128MB/256MB/512MB/1GB unbuffered DRAM Supports up to 3GB DRAM (Max) Supports only 2.5V DDR DIMM IT8712F 1 AGP slot supports 8X/4X mode, AGP3.0 8X interface at 533MHz 5 PCI slots support 33MHz & PCI 2.2 compliant 2 IDE controllers provides IDE HDD/CD-ROM (IDE1, IDE2) with PIO, Bus Master (Ultra DMA33/ATA66/ATA100/ATA133) operation modes IDE3 (j) and IDE4 (j) compatible with RAID, Ultra ATA133/100, IDE 2 Serial ATA connectors in 150 MB/s operation mode (j) Controlled by SiI3112 (j) CPU/System/Power(j) fan revolution detect CPU/System temperature detect CPU warning temperature System voltage detect CPU/System/Power(j) fan fail warning CPU Smart Fan control(j) Thermal shutdown function to be continued.
j For GA-7N400 Pro2 only. k For GA-7N400 only. l For GA-7N400-L only. -5Introduction

Chipset

Memory
I/O Control Slots On-Board IDE
Serial ATA (j) Hardware Monitor

On-Board Peripherals

1 Floppy port supports 2 FDD with 360K, 720K,1.2M, 1.44M and 2.88M bytes 1 Parallel port supports Normal/EPP/ECP mode 2 Serial ports (COM1 & COM2) 6 USB 2.0/1.1 ports (4 x Rear, 2 x Front by cable) 3 IEEE1394 ports (by cable) (j) 1 IrDA connector for IR 1 Front Audio connector Builit in Realtek 8110S Gigabit (j) Builit in Realtek 8100C (l) 1 RJ45 port Realtek ALC650 CODEC Line Out / 2 front speaker Line In / 2 rear speaker (by s/w switch) Mic In / center & subwoofer (by s/w switch) SPDIF In / Out CD In / AUX In / Game port Onboard GigaRAID IT8212F chipset Supports data striping (RAID 0) or mirroring (RAID 1) or striping+mirroring (RAID 0 + RAID 1) Supports JBOD function Supports concurrent dual ATA133 IDE controller operation Support ATAPI mode for HDD Supports IDE bus master operation Support ATA133/RAID mode switch by BIOS Displays status and error checking messages during boot-up Mirroring supports automatic background rebuilds Features LBA and Extended Interrupt 13 drive translation in controller onboard BIOS to be continued.

On-Board LAN

On-Board Sound

On-Board IDE RAID (j)

j For GA-7N400 Pro 2 only. k For GA-7N400 only. l For GA-7N400-L only.

On-Board SATA RAID (j)

On-Board IEEE1394 (j) PS/2 Connector BIOS

Additional Features

Overclocking

Onboard Silicon Image SiI3112 Supports Disk striping (RAID0) or DISK Mirroring (RAID1) Supports UDMA up to 150 MB/sec AIL UDMA and PIO Modes Up to 2 SATA Device ACPI and ATA/ATAPI6 Supports hot plug function Built-in TI TSB43AB23 PS/2 Keyboard interface and PS/2 Mouse interface Licensed AWARD BIOS Supports Dual BIOS (j) Supports Face Wizard Supports Q-Flash PS/2 Keyboard power on by password PS/2 Mouse power on External Modem wake up STR(Suspend-To-RAM) AC Recovery Poly fuse for keyboard over-current protection USB KB/Mouse wake up from S3 Supports Thermal Shutdown function Supports @BIOS Over Voltage (CPU/DDR/AGP) by BIOS Over Clock (CPU/DDR/AGP/PCI) by BIOS
Please set the CPU host frequency in accordance with your processor's specifications. We don't recommend you to set the system bus frequency over the CPU's specification because these specific bus frequencies are not the standard specifications for CPU, chipset and most of the peripherals. Whether your system can run under these specific bus frequencies properly will depend on your hardware configurations, including CPU, Chipsets, SDRAM, Cardsetc.
j For GA-7N400 Pro2 only. k For GA-7N400 only. l For GA-7N400-L only.

Introduction

GA-7N400 Pro2 Motherboard Layout

KB_MS ATX_12V

CLK_RATIO CPU_FAN

RAM_LED PWR_FAN

SOCKET A

GA-7N400 Pro2

AUDIO CLK_SW

F_AUDIO

RTL8110S

2X_DET AGP PCI1

NB_FAN

SYS_FAN

SATA0 SATA1

nVIDIA nForce 2 MCP

IT8712F

SUR_CEN

BACKUP

GigaRAID IT8212

SiI3112

BIOS MAIN BIOS SPDIF_IO

The clock ratio can be switched by CLK_RATIO and refer to below table.The system bus frequency can be switched at 100MHz and auto by adjusting CLK_SW.
CLK_RATIO RATIO AUTO (Default) 5x 5.5x 6x 6.5x 7x 7.5x 8x 8.5x 9x 9.5x 10x 10.5x 11x 11.5x 12x 12.5x 13x 13.5x 14x 15x 16x 16.5x 17x 18x 1 X O X O X O X O X O X O X O X O X O X O O O X O X 2 X O O X X O O X X O O X X O O X X O O X O X X O O 3 X X X X X O O O O X X X X O O O O X X X O O O X X
O: ON / X :OFF 4 X O O O O X X X X X X X X O O O O O O O X X X X X 5 X O O O O O O O O O O O O O O O O X X X X X X X X 6 X O O O O O O O O O O O O O O O O O O O O O O O O
Default Setting : Auto (X X X X X X) CLK_RATIO 2 1
Default Setting : OFF CLK_SW ON

CLK_SW ON OFF

AUTO 100MHz
AUTO : Supports FSB 400/333/266 MHz CPU 100MHz : Fix FSB 200MHz CPU
You must set CLK_SW to 100MHz when you used FSB 200MHz CPU.
MNote: In order to BIOS can auto detecting when your CPU mutiplier over 18x, please adjust mutiplier swich in CLK_RATIO to "AUTO." - 14 -
Step 2: Install the Central Processing Unit (CPU)
Before installing the processor, adhere to the following warning: 1. Please make sure the CPU type is supported by the motherboard. 2. If you do not match the CPU socket Pin 1 and CPU cut edge well, it will cause improper installation. Please change the insert orientation.
Step 2-1: CPU Installation

CPU Top View

CPU Bottom View

Socket Actuation Lever

Pin1 indicator
1 Pull up the CPU socket lever and up to 90-degree angle. 2. Locate Pin 1 in the socket and look for a (golden) cut edge on the CPU upper corner. Then insert the CPU into the socket.
- 15 Hardware Installation Process
7n400pro2_1002_q.p2003/7/4, U 03:27
Step 2-2: CPU Cooling Fan Installation
Before installing the CPU cooling fan, adhere to the following warning: 1. Please use AMD approved cooling fan. 2. We recommend you to apply the thermal tape to provide better heat conduction between your CPU and cooling fan. 3. Make sure the CPU fan power cable is plugged in to the CPU fan connector, this completes the installation. Please refer to CPU cooling fan user's manual for more detail installation procedure.
1. Press down the CPU socket lever and finish CPU installation.
2. Use qualified fan approved by AMD.
3. Fasten the cooling fan supportingbase onto the CPU socket on the motherboard.
4. Make sure the CPU fan is plugged to the CPU fan connector, than install complete.

- 16 -

Step 3: Install Memory Modules
Before installing the memory modules, adhere to the following warning: 1. When DIMM LED is ON, do not install / remove DIMM from socket. 2. Please note that the DIMM module can only fit in one direction due to the one notch. Wrong orientation will cause improper installation. Please change the insert orientation.
The motherboard has 4 dual inline memory module (DIMM) sockets. The BIOS will automatically detects memory type and size. To install the memory module, just push it vertically into the DIMM socket. The DIMM module can only fit in one direction due to the notch. Memory size can vary between sockets.
Support Unbuffered DDR DIMM Sizes type: 64 Mbit (2Mx8x4 banks) 64 Mbit (1Mx16x4 banks) 128 Mbit(2Mx16x4 banks) 256 Mbit(8Mx8x4 banks) 512 Mbit(16Mx8x4 banks) 512 Mbit(8Mx16x4 banks) Total System Memory (Max3GB)
128 Mbit(4Mx8x4 banks) 256 Mbit(4Mx16x4 banks)

- 17 -

1. The DIMM socket has a notch, so the DIMM memory module can only fit in one direction.
2. Insert the DIMM memory module vertically into the DIMM socket. Then push it down.
3. Close the plastic clip at both edges of the DIMM sockets to lock the DIMM module. Reverse the installation steps when you wish to remove the DIMM module.

DDR Introduction

Established on the existing SDRAM industry infrastructure, DDR (Double Data Rate) memory is a high performance and cost-effective solution that allows easy adoption for memory vendors, OEMs and system integrators. DDR memory is a sensible evolutionary solution for the PC industry that builds on the existing SDRAM infrastructure, yet makes awesome advances in solving the system performance bottleneck by doubling the memory bandwidth. DDR SDRAM will offer a superior solution and migration path from existing SDRAM designs due to its availability, pricing and overall market support. PC2100 DDR memory (DDR266) doubles the data rate through reading and writing at both the rising and falling edge of the clock, achieving data bandwidth 2X greater than PC133 when running with the same DRAM clock frequency. With peak bandwidth of 2.664GB per second, DDR memory enables system OEMs to build high performance and low latency DRAM subsystems that are suitable for servers, workstations, high-end PC's and value desktop SMA systems.

- 18 -

Dual Channel DDR:
GA-7N400 Pro2 / GA-7N400 / GA-7N400-L support Dual Channel Technology. When Dual Channel Technology is activated, the bandwidth of memory bus will be double the original one, with the fastest speed at 6.4GB/s(DDR400). GA-7N400 Pro2 / GA-7N400 / GA-7N400-L include 4 DIMM slots, and each Channel has 2 DIMMs as following: Channel A : DIMM 1, 2 Channel B : DIMM 3, 4 Below are the explanations: If you want to operate the Dual Channel Technology, please note the following explanations due to the limitation of Intel chipset specifications. 1. Only one DDR memory module is installed: The Dual Channel Technology can't operate when only one DDR memory module is installed. 2. Two DDR memory modules are installed: The Dual Channel Technology will operate when two memory modules are inserted individually into Channel A and B. If you install two memory modules in the same channel, the Dual Channel Technology will not operate. 3. Three or Four DDR memory modules are installed: Please follow figure 1 to achieve the Dual Technology. The following tables include all memory-installed combination types: (Please note that those types not in the tables will not boot up.) l Figure 1: Dual Channel Technology (DS: Double Side, SS: Single Side)

COM1 COM2 Serial Port (9 pin Male)

y Audio Connectors

Line In (Rear Speaker) Line Out (Front Speaker) MIC In (Center and Subwoofer)
After install onboard audio driver, you may connect speaker to Line Out jack, microphone to MIC In jack. Device like CD-ROM,walkman etc. can be connected to Line-In jack. Please note: You are able to use 2-/4-/6-channel audio feature by S/W selection. If you want to enable 6-channel function, you have 2 choose for hardware connection. Method1: Connect "Front Speaker" to "Line Out" Connect "Rear Speaker" to "Line In" Connect "Center and Subwoofer" to "MIC Out ". Method2: You can refer to page 32, and contact your nearest dealer for optional SUR_CEN cable.
If you want the detail information for 2-/4-/6-channel audio setup installation, please refer to page 79.

- 22 -

Step 5-2: Connectors Introduction

14 5(j )

25 22(j ) 13 11

6(j ) 10 (j ) (j ) 21

1) ATX_12V 2) ATX 3) 4) 5) 6) 7) 8) 9) 10) CPU_FAN SYS_FAN PWR_FAN(j ) NB_FAN(j ) FDD IDE1 / IDE2 IDE3 (j ) / IDE4 (j ) SATA0 (j) / SATA1 (j )
14) RAM_LED 15) 2X_DET 16) 17) 18) 19) 20) 21) 22) 23) F_AUDIO SUR_CEN SPDIF_IO CD_IN AUX_IN F_USB F1_1394 (j) / F2_1394 (j) IR
11) F_PANEL 12) BAT 13) PWR_LED
24) GAME 25) INFO_LINK 26) CI
j For GA-7N400 Pro2 only. k For GA-7N400 only. l For GA-7N400-L only. - 23 Hardware Installation Process
1) ATX_12V (+12V Power Connector)
This connector (ATX_12V) supplies the CPU operation voltage (Vcore). If this "ATX_12V connector" is not connected, system cannot boot.

Pin No. 3

Definition GND GND +12V +12V

2) ATX (ATX Power)

AC power cord should only be connected to your power supply unit after ATX power cable and other related devices are firmly connected to the mainboard.
Pin No. 3 Definition 3.3V 3.3V GND VCC GND VCC GND Power Good

5V SB (stand by +5V)

+12V 3.3V -12V GND PS_ON(soft on/off) GND GND GND -5V VCC VCC

- 24 -

3) CPU_FAN (CPU Fan Connector)
Please note, a proper installation of the CPU cooler is essential to prevent the CPU from running under abnormal condition or damaged by overheating. The CPU fan connector supports Max. current up to 600 mA.

Pin No.

Definition GND +12V Sense
4) SYS_FAN (System Fan Connector)
This connector allows you to link with the cooling fan on the system case to lower the system temperature.

Pin No. 1 2

- 25 -
5) PWR_FAN (Power Fan Connector)(j )
6) NB_FAN (Chip Fan Connector)(j )
If you installed wrong direction, the chip fan will not work. Sometimes will damage the chip fan. (Usually black cable is GND)

Definition VCC GND

Pin 1: LED anode(+) Pin 2: LED cathode(-) Pin 1: VCC(+) Pin 2- Pin 3: NC Pin 4: Data(-) Open: Normal Operation Close: Reset Hardware System Open: Normal Operation Close: Power On/Off Pin 1: LED anode(+) Pin 2: LED cathode(-) NC

- 29 -

Reset Switch

RES+ NC

SPEAK-

12) BATTERY

CAUTION
Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer's instructions. If you want to erase CMOS. 1. Turn OFF the computer and unplug the power cord. 2. Remove the battery, wait for 30 second. 3. Re-install the battery. 4. Plug the power cord and turn ON the computer.

13) PWR_LED

PWR_LED is connect with the system power indicator to indicate whether the system is on/off. It will blink when the system enters suspend mode. If you use dual color LED, power LED will turn to another color.

Definition MPD+ MPDMPD-

- 30 -

14) RAM_LED

Do not remove memory modules while RAM_LED is on. It might cause short or other unexpected damages due to the stand by voltage. Remove memory modules only when AC power cord is disconnected.

15) 2X_DET

When an AGP 2X (3.3V) card is installed the 4X_AGP will light up, indicating a non-supported graphics card is inserted. Informing users that system might not boot up normally due to AGP 2X (3.3V) is not supported by the chipset.

- 31 -

16) F_AUDIO (Front Audio Connector)
If you want to use Front Audio connector, you must remove 5-6, 9-10 Jumper. In order to utilize the front audio header, your chassis must have front audio connector. Also please make sure the pin assigment on the cable is the same as the pin assigment on the MB header. To find out if the chassis you are buying support front audio connector, please contact your dealer. Please note, you can have the alternative of using front audio connector or of using rear audio connector to play sound.
Pin No. 3 Definition MIC GND REF Power Front Audio (R) Rear Audio (R) Reserved No Pin Front Audio (L) Rear Audio (L)
17) SUR_CEN (Surround Center Connector)

F2_1394

F1_1394

Pin No. 15 16

Definition Power Power TPA0+ TPA0GND GND TPB0+ TPB0Power Power TPA1+ TPA1GND No Pin TPB1+ TPB1-
Definition TPA2+ TPA2GND GND TPB2+ TPB2Power Power No Pin GND

23) IR

Make sure the pin 1 on the IR device is aling with pin one the connector. To enable the IR function on the board, you are required to purchase an option IR module. Be careful with the polarity of the IR connector. For optional IR cable, please contact your local dealer.

Pin No. 5

Definition VCC(+5V) No Pin IR Data Input GND IR Data Output

- 35 -

24) GAME (Game Connector)
This connector supports joystick, MIDI keyboard and other relate audio devices. Check the pin assignment while you connect the game cables. Please contact your nearest dealer for optional game cables.
Pin No. Definition VCC GRX1_R GND GPSA2 VCC GPX2_R GPY2_R MSI_R GPSA1 GND GPY1_R VCC GPSB1 MSO_R GPSB2 No Pin

25) INFO_LINK

This connector allows you to connect some external devices to provide you extra function. Check the pin assignment while you connect the external device cable. Please contact your nearest dealer for optional external device cable.
Definition SMBCLK VCC SMBDATA GPIO GND GND No Pin NC +12V +12V

- 36 -

26) CI (CASE OPEN)
This 2-pin connector allows your system to enable or disable the "Case Open" item in BIOS, if the system case begin remove.

Definition Signal GND

- 37 -

- 38 -

Chapter 3 BIOS Setup
BIOS Setup is an overview of the BIOS Setup Program. The program that allows users to modify the basic system configuration. This type of information is stored in battery-backed CMOS RAM so that it retains the Setup information when the power is turned off.

ENTERING SETUP

Powering ON the computer and pressing <Del> immediately will allow you to enter Setup. If you require more advanced BIOS settings, please go to "Advanced BIOS" setting menu. To enter Advanced BIOS setting menu, press "Ctrl+F1" key on the BIOS screen.

CONTROL KEYS

<> <> <> <> Enter <Esc> Move to previous item Move to next item Move to the item in the left hand Move to the item in the right hand Select item Main Menu - Quit and not save changes into CMOS Status Page Setup Menu and Option Page Setup Menu - Exit current page and return to Main Menu <+/PgUp> Increase the numeric value or make changes <-/PgDn> <F1> <F2> <F3> <F4> <F5> <F6> <F7> <F8> <F9> <F10> Decrease the numeric value or make changes General help, only for Status Page Setup Menu and Option Page Setup Menu Item Help Reserved Reserved Restore the previous CMOS value from CMOS, only for Option Page Setup Menu Load the file-safe default CMOS value from BIOS default table Load the Optimized Defaults Dual BIOS/Q-Flash function System Information Save all the CMOS changes, only for Main Menu

- 39 -

BIOS Setup

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GETTING HELP Main Menu

The on-line description of the highlighted setup function is displayed at the bottom of the screen.
Status Page Setup Menu / Option Page Setup Menu
Press F1 to pop up a small help window that describes the appropriate keys to use and the possible selections for the highlighted item. To exit the Help Window press <Esc>.
The Main Menu (For example: BIOS Ver. : E2)
Once you enter Award BIOS CMOS Setup Utility, the Main Menu (Figure 1) will appear on the screen. The Main Menu allows you to select from eight setup functions and two exit choices. Use arrow keys to select among the items and press <Enter> to accept or enter the sub-menu.
CMOS Setup Utility-Copyright (C) 1984-2003 Award Software } Standard CMOS Features } Advanced BIOS Features } Advanced Chipset Features } Integrated Peripherals } Power Management Setup } PnP/PCI Configurations } PC Health Status ESC: Quit F8: Dual BIOS / Q-Flash } Frequency/Voltage Control Load Fail-Safe Defaults Load Optimized Defaults Set Supervisor Password Set User Password Save & Exit Setup Exit Without Saving higf: Select Item F10: Save & Exit Setup Time, Date, Hard Disk Type. Figure 1: Main Menu
If you can't find the setting you want, please press "Ctrl+F1" to search the advanced option widden. l l Standard CMOS Features
This setup page includes all the items in standard compatible BIOS.

Advanced BIOS Features

This setup page includes all the items of Award special enhanced features.

- 40 -

l l l l l l l
Advanced Chipset Features
This setup page includes all the items of Chipset special enhanced features.

Integrated Peripherals

This setup page includes all onboard peripherals.

Power Management Setup

This setup page includes all the items of Green function features.

PnP/PCI Configurations

If a hard disk has not been installed select NONE and press <Enter>.

Drive A / Drive B

The category identifies the types of floppy disk drive A or drive B that has been installed in the computer. None 360K, 5.25" 1.2M, 5.25" No floppy drive installed 5.25 inch PC-type standard drive; 360K byte capacity. 5.25 inch AT-type high-density drive; 1.2M byte capacity (3.5 inch when 3 Mode is Enabled). 720K, 3.5" 1.44M, 3.5" 2.88M, 3.5" 3.5 inch double-sided drive; 720K byte capacity 3.5 inch double-sided drive; 1.44M byte capacity. 3.5 inch double-sided drive; 2.88M byte capacity.

- 43 -

Floppy 3 Mode Support (for Japan Area)
Disabled Drive A Drive B Both Normal Floppy Drive. (Default value) Drive A is 3 mode Floppy Drive. Drive B is 3 mode Floppy Drive. Drive A & B are 3 mode Floppy Drives.

Halt on

The category determines whether the computer will stop if an error is detected during power up.
NO Errors All Errors The system boot will not stop for any error that may be detected and you will be prompted. Whenever the BIOS detects a non-fatal error the system boot will be stopped.
All, But Keyboard The system boot will not stop for all errors except a keyboard error. (Default value) All, But Diskette All, But Disk/Key The system boot will not stop for all errors except a disk error. The system boot will not stop for all errors except keyboard and disk errors.
The category is display-only which is determined by POST (Power On Self Test) of the BIOS.

Base Memory

The POST of the BIOS will determine the amount of base (or conventional) memory installed in the system. The value of the base memory is typically 512 K for systems with 512K memory installed on the motherboard, or 640 K for systems with 640 K or more memory installed on the motherboard.

ExtendedMemory

The BIOS determines how much extended memory is present during the POST. This is the amount of memory located above 1MB in the CPU's memory address map.

- 44 -

CMOS Setup Utility-Copyright (C) 1984-2003 Award Software Advanced BIOS Features First Boot Device Second Boot Device Third Boot Device x SATA/RAID/SCSI Boot Order Boot Up Floppy Seek Flexible AGP 8X Init Display First [Floppy] [HDD-0] [CDROM] SCSI [Disabled] [Auto] [PCI] Item Help Menu Level u Select onboard RAID or PCI SCSI boot rom order

Current Voltage (V) Vcore / DDR25V / +3.3V / +5V / +12V
Detect system's voltage status automatically.
Current System Temperature
Detect System temperature automatically.

Current CPU Temperature

Detect CPU temperature automatically.
Current CPU/POWERj/SYSTEM FAN Speed (RPM)
Detect CPU/POWER/SYSTEM Fan speed status automatically.

CPU Warning Temperature

60 o C / 140 o F 70 o C / 158 o F 80 o C / 176 o F 90 o C / 194 o F 8Disabled Monitor CPU Temp. at 60o C / 140o F. Monitor CPU Temp. at 70o C / 158o F. Monitor CPU Temp. at 80o C / 176o F. Monitor CPU Temp. at 90o C / 194o F. Disable this function.(Default value)

CPU FAN Fail Warning

Disabled Enabled Fan Warning Function Disable. (Default value) Fan Warning Function Enable.

POWER FAN Fail Warningj

SYSTEM FAN Fail Warning

CPU Smart FAN Controlj

Enabled Enable CPU Smart Fan control function. (Default value) a. When the CPU temperature is higher than 40 degrees Celsius, CPU fan will run at full speed. b. When the CPU temperature is lower than 40 degrees Celsius, CPU fan will run at low speed. Disable this function.
j For GA-7N400 Pro2 only. k For GA-7N400 only. l For GA-7N400-L only. - 59 BIOS Setup
CMOS Setup Utility-Copyright (C) 1984-2003 Award Software Frequency/Voltage Control VCORE OverVoltage Control DIMM OverVoltage Control AGP OverVoltage Control [Normal] [Normal] [Normal] Item Help Menu Level u
h i g f: Move Enter:Select +/-/PU/PD: Value F10: Save ESC:Exit F5: Previous Values F6: Fail-Safe Defaults
Figure 9: Frequency/Voltage Control
VCORE OverVoltage Control
Increase VCORE voltage may get stable for Over_Clock. But it may damage to CPU when enable this feature. Normal Supply voltage as CPU reguired. (Default value) +5% / +7.5% / +10% Increase voltage range as user selected.

DIMM OverVoltage Control

Normal +0.1V +0.2V Set DIMM OverVoltage Control to Normal. (Default value) Set DIMM OverVoltage Control to +0.1V. Set DIMM OverVoltage Control to +0.2V.

AGP OverVoltage Control

Normal +0.1V +0.2V +0.3V Set AGP OverVoltage Control to Normal. (Default value) Set AGP OverVoltage Control to +0.1V. Set AGP OverVoltage Control to +0.2V. Set AGP OverVoltage Control to +0.3V.

- 60 -

CMOS Setup Utility-Copyright (C) 1984-2003 Award Software } Standard CMOS Features } Advanced BIOS Features } Advanced Chipset Features } Frequency/Voltage Control Load Fail-Safe Defaults Load Optimized Defaults

- 67 Technical Reference

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Flash BIOS Method Introduction
Method 1 : Dual BIOS (j) / Q-Flash
A. What is Dual BIOS Technology?
Dual BIOS means that there are two system BIOS (ROM) on the motherboard, one is the Main BIOS and the other is Backup BIOS. Under the normal circumstances, the system works on the Main BIOS. If the Main BIOS is corrupted or damaged, the Backup BIOS can take over while the system is powered on. This means that your PC will still be able to run stably as if nothing has happened in your BIOS.
B. How to use Dual BIOS and Q-Flash Utility?
1.) After power on the computer, pressing <Del> immediately during POST (Power On Self Test) it will allow you to enter Award BIOS CMOS SETUP, then press <F8> to enter Flash utility.
} Integrated Peripherals Dual BIOS / Q-Flash UtilitySet Supervisor Password Enter (Y/N)? Y } Power Management Setup } PnP/PCI Configurations } PC Health Status ESC: Quit F8: Dual BIOS / Q-Flash Set User Password Save & Exit Setup Exit Without Saving higf: Select Item F10: Save & Exit Setup

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2.) Award Dual BIOS Flash ROM Programming Utility Dual BIOS Utility V1.30 Boot From.. Main ROM Type/Size.. Backup ROM Type/Size.. Wide Range Protection Boot From Auto Recovery Halt On Error Keep DMI Data Main Bios SST 49LF003A SST 49LF003A Disable Main Bios Enable Disable Enable 512K 512K
Copy Main ROM Data to Backup Load Default Settings Save Settings to CMOS Q-Flash Utility Update Main BIOS from Floppy Update Backup BIOS from Floppy Save Main BIOS to Floppy Save Backup BIOS to Floppy PgDn/PgUp: Modify 3.) Dual BIOS Item explanation:
hi: Move ESC: Reset F10: Power Off
Wide Range Protection: Disable(Default), Enable
Status 1: If any failure (ex. Update ESCD failure, checksum error or reset) occurs in the Main BIOS, just before the Operating System is loaded and after the power is on, and that the Wide Range Protection is set to "Enable", the PC will boot from Backup BIOS automatically. Status 2: If the ROM BIOS on peripherals cards(ex. SCSI Cards, LAN Cards,.) emits signals torequest restart of the system after the user make any alteration on it, the boot up BIOS will not be changed to the Backup BIOS.

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IV. Q: Who Needs DualBIOS technology? Answer:
This new technology will eliminate valuable system down time and costly repair bills cause by BIOS failures. 1. Every user should have DualBIOS technology due to the advancement of computer viruses. Everyday, there are new BIOS-type viruses discovered that will destroy your system BIOS. Most commercial products on the market do not have solutions to guard against this type of virus intrusion. The DualBIOS technology will provide a state-of-the-art solution to protect your PC: Case I.) Vicious computer viruses may wipe out your entire system BIOS. With a conventional single system BIOS PC, the PC will not be functional until it is sent for repairs. Case II.) If the "Auto Recovery" option is enabled in the DualBIOS utility, and if a virus corrupts your system BIOS, the backup BIOS will automatically reboot the system and correct the main BIOS. Case III.) A user may override booting from the main system BIOS. The DualBIOS utility may be entered to manually change the boot sequence to boot from the backup BIOS. 2. During or after a BIOS upgrade, if DualBIOS detects that the main BIOS is corrupt, the backup BIOS will take over the boot-up process automatically. Moreover, it will verify the main and backup BIOS checksums when booting-up. DualBIOS technology examines the checksum of the main and backup BIOS while the system is powered on to guarantee your BIOS operates properly. 3. Power Users will have the advantage of having two BIOS versions on their mainboard. The benefit is being able to select either version BIOS to suit the performance system needs. 4. Flexibility for high-end desktop PCs and workstation/servers. In the DualBIOS utility, the option can be set, "Halt On When BIOS Defects" to be enabled to halt your system with awarning message that the main BIOS has been corrupted. Most workstation/servers require constant operation to guarantee services have not been interrupted. In this situation, the "Halt On When BIOS Defects" message may be disabled to avoid system pauses during normal booting. Another advantage you gain from Giga-Byte's DualBIOS technology is the ability to upgrade from dual 2 Mbit BIOS to dual 4 Mbit BIOS in the future if extra BIOS storage is need.

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Method 2 : @BIOS Utility
If you don't have DOS boot disk, we recommend that you used Gigabyte @BIOS program to flash BIOS.

Press here.

2. Click Start/ Programs/ GIGABYTE/ @BIOS. 1. Click "@BIOS" item.

3.Click "P".