Gigabyte GA-8S648FXM, G-MAX MA15 User Manual

When you installing AGP card, please make sure the following notice

is fully understood and practiced. If your AGP card has "AGP 4X/8X

(1.5V) notch" (show below), please make sure your AGP card is AGP

4X/8X(1.5V).

AGP 4X/8X notch

Caution: AGP 2X card is not supported by SiS® 648FX. You might

experience system unable to boot up normally. Please insert an AGP

4X/8X card.

Example 1: Diamond Vipper V770 golden finger is compatible with 2X/4X

mode AGP slot. It can be switched between AGP 2X(3.3V) or 4X(1.5V)

mode by adjusting the jumper. The factory default for this card is 2X(3.3V).

The GA-8S648FXM (or any AGP 4X/8X only) motherboards might not func-

tion properly, if you install this card without switching the jumper to

4X(1.5) mode in it.

Example 2: Some ATi Rage 128 Pro graphics cards made by "Power Color",

the graphics card manufacturer & some SiS 305 cards, their golden finger

is compatible with 2X(3.3V)/4X(1.5V) mode AGP slot, but they support

2X(3.3V) only. The GA-8S648FXM (or any AGP 4X/8X only) motherboards

might not function properly, If you install this card in it.

Note : Although Gigabyte's AG32S(G) graphics card is based on ATi Rage

128 Pro chip, the design of AG32S(G) is compliance with AGP 4X(1.5V)

specification. Therefore, AG32S(G) will work fine with SiS® 648FX based

motherboards.

00

0 The author assumes no responsibility for any errors

00

or omissions that may appear in this document nor
does the author make a commitment to update the
information contained herein.

00

0 Third-party brands and names are the property of

00

their respective owners.

00

0 Please do not remove any labels on motherboard, this

00

may void the warranty of this motherboard.

00

0 Due to rapid change in technology, some of the

00

specifications might be out of date before publication
of this booklet.

Ausschlager Weg 41, 1F, 20537 Hamburg, Germany

( description of the apparatus, system, installation to which it refers)

(reference to the specification under which conformity is declared)

in accordance with 89/336 EEC-EMC Directive



 EN 55011 Limits and methods of measurement





 EN 55013





 EN 55014 Limits and methods of measurement





 EN 55015 Limits and methods of measurement





 EN 55020



77

7 EN 55022 Limits and methods of measurement

77



 DIN VDE 0855




 part 10




 part 12



77

7 CE marking

77



 EN 60065





 EN 60335



of radio disturbance characteristics of

industrial,scientific and medical (ISM

high frequency equipment

Limits and methods of measurement

of radio disturbance characteristics of

broadcast receivers and associated

equipment

of radio disturbance characteristics of

household electrical appliances,

portable tools and similar electrical

apparatus

of radio disturbance characteristics of

fluorescent lamps and luminaries

Immunity from radio interference of

broadcast receivers and associated

equipment

of radio disturbance characteristics of

information technology equipment

Cabled distribution systems; Equipment

for receiving and/or distribution from

sound and television signals

The manufacturer also declares the conformity of above mentioned product

with the actual required safety standards in accordance with LVD 73/23 EEC

Safety requirements for mains operated

electronic and related apparatus for

household and similar general use

Safety of household and similar

electrical appliances

(Stamp)

Declaration of Conformity

We, Manufacturer/Importer

(full address)

G.B.T. Technology Träding GMbH

declare that the product

Mother Board

GA-8S648FXM

is in conformity with



 EN 61000-3-2*



77

7 EN 60555-2

77



 EN 61000-3-3* Disturbances in supply systems cause



77

7 EN 60555-3

77

77

7 EN 50081-1

77

77

7 EN 50082-1

77



 EN 55081-2





 EN 55082-2





 ENV 55104





 EN50091-2



(EC conformity marking)



 EN 60950





 EN 50091-1



Manufacturer/Importer

Date : July 7, 2003

Disturbances in supply systems cause

by household appliances and similar

electrical equipment “Harmonics”

by household appliances and similar

electrical equipment “Voltage fluctuations”

Generic emission standard Part 1:

Residual commercial and light industry

Generic immunity standard Part 1:

Residual commercial and light industry

Generic emission standard Part 2:

Industrial environment

Generic emission standard Part 2:

Industrial environment

lmmunity requirements for household

appliances tools and similar apparatus

EMC requirements for uninterruptible

power systems (UPS)

Safety for information technology equipment

including electrical bussiness equipment

General and Safety requirements for

uninterruptible power systems (UPS)

Signature:

Name:

Timmy Huang

Timmy Huang

DECLARATION OF CONFORMITY

Per FCC Part 2 Section 2.1077(a)

Responsible Party Name:

Address:

Phone/Fax No:

hereby declares that the product

Product Name:

Model Number:

Conforms to the following specifications:

FCC Part 15, Subpart B, Section 15.107(a) and Section 15.109

(a),Class B Digital Device

Supplementary Information:

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 and (2) this device must accept any inference received,

including that may cause undesired operation.

Representative Person’s Name:

Signature:

G.B.T. INC. (U.S.A.)

17358 Railroad Street

City of Industry, CA 91748

[phone]/ [phone]

Motherboard

GA-8S648FXM

ERIC LU

Eric Lu

Date:

July 7, 2003

GA-8S648FXM

P4 Titan Series Motherboard

USER'S MANUAL

Pentium® 4 Processor Motherboard

Rev. 1001

12ME-8S648FXM-1001

English

Item Checklist ......................................................................................... 4

Chapter 1 Introduction ............................................................................5

Chapter 2 Hardware Installation Process ............................................. 11

Table of Content

Features Summary ...................................................................................... 5

GA-8S648FXM Motherboard Layout .......................................................... 7

Block Diagram ............................................................................................. 8

Step 1: Install the Central Processing Unit (CPU)..................................... 12

Step 1-1: CPU Installation .............................................................................................. 12

Step 1-2: CPU Cooling Fan Installation ........................................................................13

Step 2: Install Memory Modules ................................................................ 14

Step 3: Install expansion cards ................................................................. 15

Step 4: Connect ribbon cables, cabinet wires and power supply ............ 16

Step 4-1: I/O Back Panel Introduction ...........................................................................16

Step 4-2: Connectors Introduction ................................................................................. 18

Chapter 3 BIOS Setup ......................................................................... 31

The Main Menu (For example: BIOS Ver. : F1d) ...................................... 32

Standard CMOS Features......................................................................... 34

Advanced BIOS Features .......................................................................... 37

Integrated Peripherals .............................................................................. 39

Power Management Setup ....................................................................... 43

PnP/PCI Configurations ............................................................................. 46

PC Health Status........................................................................................ 47

- 2 -GA-8S648FXM Motherboard

Frequency/Voltage Control ........................................................................ 49

Top Performance ......................................................................................51

Load Fail-Safe Defaults ............................................................................. 52

Load Optimized Defaults ........................................................................... 53

Set Supervisor/User Password .................................................................. 54

Save & Exit Setup ....................................................................................... 55

Exit Without Saving ................................................................................... 56

Chapter 4 Technical Reference ........................................................... 59

@BIOS™ Introduction ............................................................................... 59

EasyTune™ 4 Introduction........................................................................ 60

Flash BIOS Method Introduction............................................................... 61

2- / 4- / 6-Channel Audio Function Introuction .......................................... 65

Jack-Sensing Introuction........................................................................... 71

Xpress Recovery Introduction ................................................................... 73

English

Chapter 5 Appendix............................................................................. 77

- 3 -

Table of Content

Item Checklist

English

The GA-8S648FXM motherboard

CD for motherboard driver & utility

GA-8S648FXM user's manual

Quick PC Installation Guide

SATA RAID Manual

GC-SATA Card (optional)

(Manual; SATA cable x 1; Power cable x 1)

I/O Shield

IDE cable x 1 / Floppy cable x 1

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.

1. Unplug your computer when working on the inside.

2. 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.

3. Hold components by the edges and try not touch the IC chips, leads or connectors, or other
components.

4. Place components on a grounded antistatic pad or on the bag that came with the components
whenever the components are separated from the system.

5. Ensure that the ATX power supply is switched off before you plug in or remove the ATX power
connector on the motherboard.

Serial ATA cable x 1

2 Port USB Cable x 1

4 Port USB Cable x 1

SPDIF Kit x 1 (SPDIF Out Kit)

IEEE 1394 Cable x1

Audio Combo Kit x 1

(SURROUND-Kit + SPDIF Out Kit)

Motherboard Settings Label

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.

- 4 -GA-8S648FXM Motherboard

Chapter 1 Introduction

Features Summary

Form Factor y 24.4cm x 24.4cm Micro ATX size form factor, 4 layers PCB

®

CPU y Socket 478 for Intel

y Support Intel
y Support Intel
y Intel® Pentium® 4 800/533/400MHz FSB
y 2nd cache depends on CPU

Chipset y SiS

®

Chipset 648FX HOST/AGP/Controller

y SiS® 963 I/O Controller Hub

Memory y 2 184-pin DDR DIMM sockets

y Supports DDR400/DDR333/DDR266/DDR200 DIMM
y Supports 128MB/256MB/512MB/1GB unbuffered DRAM
y Supports up to 2GB DRAM (Max)
y Supports only DDR DIMM

I/O Control y IT8705
Slots y 1 AGP slot 4X/8X (1.5V) device support

y 3 PCI slots support 33MHz & PCI 2.3 compliant

On-Board IDE y 2 IDE controllers provides IDE HDD/CD-ROM (IDE1, IDE2) with

PIO, Bus Master (Ultra DMA33/ATA66/ATA100/ATA133) operation

modes

y Can connect up to 4 IDE devices

On-Board Peripherals y 1 Floppy port supports 2 FDD with 360K, 720K,1.2M, 1.44M

and 2.88M bytes

y 1 Parallel port supports Normal/EPP/ECP mode
y 2 Serial ports (COMA & COMB)
y 6 USB 2.0/1.1 ports (2 x Rear, 4 x Front by cable)
y 1 Front Audio connector

Hardware Monitor y CPU/System fan revolution detect

y CPU/System temperature detect
y CPU warning temperature
y System voltage detect
y CPU/System fan fail warning

Micro FC-PGA2 Pentium® 4 processor

®

Pentium® 4 (Northwood, Prescott) processor

®

Pentium® 4 Processor with HT Technology

to be continued......

<Note >

English

- 5 -

Introduction

On-Board LAN y Builit in RTL8100C Chipset

On-Board Sound y Realtek ALC655 codec

English

PS/2 Connector y PS/2 Keyboard interface and PS/2 Mouse interface
BIOS y Licensed Phoenix BIOS, 2M bit BIOS

Additional Features y PS/2 Keyboard power on by password

y 1 RJ45 port

y Supports Jack-Sensing function
y Line Out / 2 front speaker
y Line In / 2 rear speaker (by s/w switch)
y Mic In / center & subwoofer (by s/w switch)
y SPDIF In / Out
y CD In / AUX In / Game port

y Supports Q-Flash

y PS/2 Mouse power on
y STR (Suspend-To-RAM)
y AC Recovery
y Poly fuse for keyboard over-current protection
y USB KB/Mouse wake up from S3
y Supports @BIOS
y Supports EasyTune 4

™

™

HT functionality requirement content :

Enabling the functionality of Hyper-Threading Technology for your computer system requires all

of the following platform components:

- CPU: An Intel

- Chipset: A SiS

- BIOS: A BIOS that supports HT Technology and has it enabled

- OS: An operation system that has optimizations for HT Technology

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, Cards…etc.

®

Pentium 4 Processor with HT Technology

®

Chipset that supports HT Technology

- 6 -GA-8S648FXM Motherboard

GA-8S648FXM Motherboard Layout

English

KB_MS

COMA

COMB

LINE_OUTMIC_IN

LINE_IN

USB

CODEC

LPT

GAME

LAN

AUX_IN

F_AUDIO

CPU_FAN

RTL
8100C

SPDIF_IO

CD_IN

SUR_CEN

ATX_12V

AGP

SOCKET 478

SiS 648FX

PCI1

PCI2

PCI3

BIOS

RAM_LED

GA-8S648FXM

DDR1

DDR2

SiS 963

CLR_PWD

BUZZER

F_USB2

F_USB1

IT8705

IDE2

BATTERY

ATX

IDE1

FDD

SYS _FAN

CI

F_PANEL

- 7 -

PWR_LED

Introduction

Block Diagram

English

PCICLK

(33MHz)

AGPCLK

(66MHz)

3 PCI

AGP 4X/8X

RJ45

AC97 Link

AC97

CODEC

MIC

LINE-IN

RTL

8100C

6 USB

LINE-OUT

Pentium 4

Socket 478

SiS 648FX

Ports

CPU

System Bus

800/533/400MHz

SiS 963

ATA33/66/100/133

IDE Channels

CPUCLK+/- (100/133/200MHz)

266/333/400MHz

DDR RAM

MCHCLK (100/133/200MHz)

66 MHz

33 MHz

48 MHz

LPC BUS

14.318 MHz

BIOS

IT8705

24 MHz

33 MHz

Game Port

Floppy

LPT Port

PS/2 KB/Mouse

2 COM Ports

- 8 -GA-8S648FXM Motherboard

English

- 9 -

Introduction

English

- 10 -GA-8S648FXM Motherboard

Chapter 2 Hardware Installation Process

To set up your computer, you must complete the following steps:

Step 1- Install the Central Processing Unit (CPU)

Step 2- Install memory modules

Step 3- Install expansion cards

Step 4- Connect ribbon cables, cabinet wires, and power supply

Step 1

Step 4

Step 2

Step 4

English

Step 4

Step 3

Congratulations! You have accomplished the hardware installation!

Turn on the power supply or connect the power cable to the power outlet. Continue with the

BIOS/software installation.

- 11 - Hardware Installation Process

Step 1: Install the Central Processing Unit (CPU)

English

Step 1-1: CPU Installation

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.

Angling the

rod to 65

1. Angling the rod to 65-degree maybe

feel a kind of tight , and then continue

pull the rod to 90-degree when a noise

"cough" made.

0

Pin1 indicator

3. CPU Top View

Socket

Actuation

Lever

2. Pull the rod to the 90-degree directly.

Pin1 indicator

4. 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.

- 12 -GA-8S648FXM Motherboard

Step 1-2: CPU Cooling Fan Installation

Before installing the CPU cooling fan, adhere to the following warning:

1. Please use Intel approved cooling fan.

2. We recommend you to apply the thermal tape to provide better heat

conduction between your CPU and cooling fan.

(The CPU cooling fan might stick to the CPU due to the hardening of

the thermal paste. During this condition if you try to remove the cool-

ing fan, you might pull the processor out of the CPU socket alone with

the cooling fan, and might damage the processor. To avoid this from

happening, we suggest you to either use thermal tape instead of

thermal paste, or remove the cooling fan with extreme caution.)

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.

English

1. Fasten the cooling fan supporting-

base onto the CPU socket on the

motherboard.

2. Make sure the CPU fan is plugged

to the CPU fan connector, than

install complete.

- 13 - Hardware Installation Process

Step 2: Install Memory Modules

English

The motherboard has 2 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.

Before installing the memory modules, adhere to the following warning:

1. When RAM 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.

Notch

DDR

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.

- 14 -GA-8S648FXM Motherboard

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 3.2GB 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.

Step 3: Install expansion cards

1. Read the related expansion card's instruction document before install the expansion card into the
computer.

2. Remove your computer's chassis cover, screws and slot bracket from the computer.

3. Press the expansion card firmly into expansion slot in motherboard.

4. Be sure the metal contacts on the card are indeed seated in the slot.

5. Replace the screw to secure the slot bracket of the expansion card.

6. Replace your computer's chassis cover.

7. Power on the computer, if necessary, setup BIOS utility of expansion card from BIOS.

8. Install related driver from the operating system.

English

AGP Card

Please carefully pull out the small white-drawable
bar at the end of the AGP slot when you try to
install / uninstall the AGP card. Please align the
AGP card to the onboard AGP slot and press firmly
down on the slot. Make sure your AGP card is
locked by the small white-drawable bar.

- 15 - Hardware Installation Process

Step 4: Connect ribbon cables, cabinet wires and

power supply

English

Step 4-1: I/O Back Panel Introduction

X

XX

X PS/2 Keyboard and PS/2 Mouse Connector

XX

Y

PS/2 Mouse Connector

(6 pin Female)

PS/2 Keyboard Connector

(6 pin Female)

This connector supports standard PS/2

keyboard and PS/2 mouse.

Y Parallel Port and Serial Ports (COMA/COMB)

Parallel Port

(25 pin Female)

This connector supports 2 standard COM ports

and 1 Parallel port. Device like printer can be

connected to Parallel port; mouse and modem

etc. can be connected to Serial ports.

Z

[

\

COMA COMB

Serial Port (9 pin Male)

- 16 -GA-8S648FXM Motherboard

Z Game / MIDI Ports

Joystick/ MIDI (15 pin Female)

This connector supports joystick, MIDI

keyboard and other relate audio devices.

English

[ Audio Connectors

Line Out

(Front Speaker)

Line In

(Rear Speaker)

If you want the detail information for 2-/4-/6-channel audio setup

installation, please refer to page 65.

\ USB/LAN Connector

MIC In
(Center and
Subwoofer)

LAN

USB 0

USB 1

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 26, and contact your
nearest dealer for optional SUR_CEN cable.

Before you connect your device(s) into USB

connector(s), please make sure your device(s)

such as USB keyboard,mouse, scanner, zip,

speaker...etc. Have a standard USB interface.

Also make sure your OS supports USB

controller. If your OS does not support USB

controller, please contact OS vendor for

possible patch or driver upgrade. For more

information please contact your OS or device(s)

vendors.

- 17 - Hardware Installation Process

Step 4-2: Connectors Introduction

English

13

12
11

1) ATX_12V

2) ATX

3) CPU_FAN

4) SYS_FAN

5) FDD

6) IDE1 / IDE2

7) F_PANEL

8) PWR_LED

9) RAM_LED

13

10

14 15

10) F_AUDIO

11) CD_IN

12) AUX_IN

13) SPDIF_IO

14) SUR_CEN

15) F_USB1 / F_USB2

16) CI

17) CLR_PWD

18) BAT

9

2

6

5

18

4

16

7

17

8

- 18 -GA-8S648FXM Motherboard

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. Definition

2

4

1

3

1 GND

2 GND

3 +12V

4 +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.

10

20

111

Pin No. Definition

1 3.3V

2 3.3V

3 GND

4 VCC

5 GND

6 VCC

7 GND

8 Power Good

9 5V SB (stand by +5V)

10 +12V

11 3.3V

12 -12V

13 GND

14 PS_ON(soft on/off)

15 GND

16 GND

17 GND

18 -5V

19 VCC

20 VCC

English

- 19 - Hardware Installation Process

3) CPU_FAN (CPU Fan Connector)

English

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.

1

Pin No. Definition

1 GND

2 +12V

3 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. Definition

1 GND

2 +12V

3 Sense

1

- 20 -GA-8S648FXM Motherboard

5) FDD (Floppy Connector)

Please connect the floppy drive ribbon cables to FDD. It supports 360K, 1.2M, 720K, 1.44M and

2.88M bytes floppy disk types.
The red stripe of the ribbon cable must be the same side with the Pin1.

English

34

2

6) IDE1 / IDE2 (IDE1 / IDE2 Connector)

Important Notice:
Please connect first hard disk to IDE1 and connect CD-ROM to IDE2.
The red stripe of the ribbon cable must be the same side with the Pin1.

33

1

3940

12

IDE2

- 21 - Hardware Installation Process

IDE1

7) F_PANEL (2 x 10 pins Connector)

English

Please connect the power LED, PC speaker, reset switch and power switch etc of your chassisfront
panel to the F_PANEL connector according to the pin assignment above.

PW-

MSG-

1920

1

NC

RES+

1

RES-

HD-

HD+

111

12

Speaker

Connector

Soft Power
Connector

Message LED/
Power/
Sleep LED

SPEAK-

SPEAK+

PW+

MSG+

HD (IDE Hard Disk Active LED) Pin 1: LED anode(+)

(Blue) Pin 2: LED cathode(-)

SPK (Speaker Connector) Pin 1: VCC(+)

(Amber) Pin 2- Pin 3: NC

Pin 4: Data(-)

RES (Reset Switch) Open: Normal Operation

(Green) Close: Reset Hardware System

PW (Soft Power Connector) Open: Normal Operation

(Red) Close: Power On/Off

MSG(Message LED/ Power/ Sleep LED) Pin 1: LED anode(+)

(Yellow) Pin 2: LED cathode(-)

NC (Purple) N C

Reset Switch

IDE Hard Disk

Active LED

- 22 -GA-8S648FXM Motherboard

8) 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.

English

1

Pin No. Definition

1 MPD+

2 MPD-

3 MPD-

9) 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.

_

+

- 23 - Hardware Installation Process

10) F_AUDIO (Front Audio Connector)

English

11) CD_IN (CD In 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. Definition

1 MIC

2 GND

10

2

9

1

3 REF

4 Power

5 Front Audio (R)

6 Rear Audio (R)

7 Reserved

8 No Pin

9 Front Audio (L)

10 Rear Audio (L)

Connect CD-ROM or DVD-ROM audio out to the connector.

1

Pin No. Definition

1 CD-L

2 GND

3 GND

4 CD-R

- 24 -GA-8S648FXM Motherboard

12) AUX_IN (AUX In Connector)

Connect other device (such as PCI TV Tunner audio out) to the connector.

English

1

Pin No. Definition

1 AUX-L

2 GND

3 GND

4 AUX-R

13) SPDIF_IO (SPDIF In / Out Connector)

The SPDIF output is capable of providing digital audio to external speakers or compressed AC3
data to an external Dolby Digital Decoder. Use this feature only when your stereo system has
digital input function. Use SPDIF IN feature only when your device has digital output function.
Be careful with the polarity of the SPDIF_IO connector. Check the pin assignment carefully while
you connect the SPDIF cable, incorrect connection between the cable and connector will make the
device unable to work or even damage it. For optional SPDIF cable, please contact your local
dealer.

Pin No. Definition

5

162

- 25 - Hardware Installation Process

1 VCC

2 No Pin

3 SPDIF

4 SPDIFI

5 GND

6 GND