Gigabyte GA-8S655TX ULTRA 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® 655TX. 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-8S655TX Ultra(or any AGP 4X only) motherboards
might not function 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-8S655TX Ultra (or any AGP 4X
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® 655TX based motherboards.
Before you install PCI cards, please remove the Dual BIOS label from
PCI slots if there is one.
M The author assumes no responsibility for any errors or
omissions that may appear in this document nor does the
author make a commitment to update the information
contained herein.
M Third-party brands and names are the property of their
respective owners.
M Please do not remove any labels on motherboard, this may
void the warranty of this motherboard.
M Due to rapid change in technology, some of the specifications
might be out of date before publication of this booklet.
Ausschla ger Weg 41, 1F, 20537 Hamburg, Germany
( description of the apparatus, system, installation to which it refers)
(reference to the specification under which con formity is declared)
in accordance with 89/336 EEC-EMC Directive
o EN 55011 Limits and methods of measurement
o EN 55013
o EN 55014 Limits and methods of measurement
o EN 55015 Limits and methods of measurement
o EN 55020
T EN 55022 Limits and methods of measurement
o DIN VDE 0855
o part 10
o part 12
T CE marking
o EN 60065
o 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-8S655TX Ultra
is in conformity with
o EN 61000-3-2*
T EN 60555-2
o EN 61000-3-3* Disturbances in supply systems cause
T EN 60555-3
T EN 50081-1
T EN 50082-1
o EN 55081-2
o EN 55082-2
o ENV 55104
o EN50091-2
(EC conformity marking)
o EN 60950
o EN 50091-1
Manufacturer/Importer
Date : November 28, 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:
Add ress:
Phone/Fax No:
hereby declares that the product
Produ ct Name:
Model Nu mber:
Conforms to the following specifications:
FCC Part 15, Subpart B, Section 15.107(a) and Section 15.109
(a),Class B Digital D evice
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 undes ired operation.
Representative Person’s Name:
G.B.T. INC. (U .S.A.)
17358 Railroad Street
City of Indu stry, CA 91748
(818) 854-9338/ (818) 854-9339
Motherboard
GA-8S655TX Ultra
ERIC LU
Signature:
Date:
Eric Lu
November 28, 2003
GA-8S655TX Ultra
P4 Titan Series Motherboard
USER'S MANUAL
Pentium®4 Processor Motherboard
Rev. 1002
12ME-8S655TXU-1002
English
Warning ..............................................................................................4
Chapter 1 Introduction .........................................................................5
Chapter 2 Hardware Installation Process ............................................ 11
Table of Content
Features Summary .......................................................................................... 5
GA-8S655TX Ultra Motherboard Layout ........................................................ 8
Block Diagram .................................................................................................. 9
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 ..................................................................... 17
Step 4: Connect ribbon cables, cabinet wires, and power supply .............. 18
Step 4-1: I/O Back Panel Introduction ..........................................................................18
Step 4-2: Connectors & Jumper Setting Introduction ....................................................20
Chapter 3 BIOS Setup ....................................................................... 37
The Main Menu (For example: BIOS Ver. : D2) ........................................... 38
Standard CMOS Features ............................................................................. 40
Advanced BIOS Features .............................................................................. 43
Integrated Peripherals .................................................................................. 45
Power Management Setup ............................................................................ 50
- 2 -GA-8S655TX Ultra Motherboard
English
PnP/PCI Configurations................................................................................. 52
PC Health Status ........................................................................................... 53
Frequency/Voltage Control ............................................................................ 55
Top Performance ............................................................................................ 58
Load Fail-Safe Defaults ................................................................................. 59
Load Optimized Defaults ............................................................................... 60
Set Supervisor/User Password ..................................................................... 61
Save & Exit Setup .......................................................................................... 62
Exit Without Saving ...................................................................................... 63
Chapter 4 Technical Reference .......................................................... 65
@ BIOSTM Introduction .................................................................................. 65
Easy TuneTM 4 Introduction ........................................................................... 66
Face-WizardTM Utilities Installation ............................................................... 67
Flash BIOS Method Introduction ................................................................... 68
2-/4-/6-Channel Audio Function Introduction ............................................... 89
Jack-Sensing Introduction ............................................................................. 95
UAJ Introduction ............................................................................................ 97
Xpress Recovery Introduction ....................................................................... 99
Serial ATA RAID BIOS Utility Operation Introduction ................................. 102
Chapter 5 Appendix ......................................................................... 111
- 3 -
Table of Content
Warning
English
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.
Installing the motherboard to the chassis…
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.
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.
If the motherboard has mounting holes, but they don't line up with the holes on the base and there
- 4 -GA-8S655TX Ultra Motherboard
English
Chapter 1 Introduction
Features Summary
Form Factor — 30.5cm x 24.4cm ATX size form factor, 4 layers PCB.
CPU — Socket 478 for Intel® Micro FC-PGA2 Pentium® 4 processor
— Support Intel® Pentium® 4 (Northwood, Prescott) processor
— Support Intel® Pentium® 4 Processor with HT Technology
— Intel Pentium®4 800/533/400 MHz FSB
— 2nd cache depends on CPU
Chipset — SiS 655TX Host/Memory controller
— SiS 964 MuTIOL Media I/O
Memory — 4 184-pin DDR DIMM sockets
— Supports Dual channel DDR400/DDR333/DDR266 DIMM
— Supports 128MB/256MB/512MB/1GB unbuffered DRAM
— Supports up to 4GB DRAM (Max)
I/O Control — IT8705
Slots — 1 AGP slot supports 8X/4X mode
— 5 PCI slot supports 33MHz & PCI 2.3 compliant
On-Board IDE — 2 IDE controllers provides IDE HDD/CD-ROM (IDE1, IDE2) with
PIO, Bus Master (Ultra DMA33/ATA66/ATA100/ATA133)
operation modes
— IDE3 and IDE4 compatible with RAID,
Ultra ATA133/100, IDE
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 (COMA&COMB)
— 8 USB 2.0/1.1 ports (4 x Rear, 4 xFront by cable)
— 3 IEEE1394 ports (by cable)
— 1 Front Audio Connector
— 1 IrDA connector for IR
(Note 1)
to be continued......
(Note 1) When all four sockets are populated with 1GB m emory in each DIMM (total 4GB),
the sysem will detect the total size a littl e bit less than 4GB due to SIS 964 chipset's
resource a llocation.
Introduction- 5 -
Hardware Monitor — CPU/System Fan Revolution detect
English
On-Board Sound — Realtek ALC658 UAJ CODEC
On-Board LAN — Build in RTL8110S Chipset (10/100/1000 Mbit)
On-Board IDE RAID — Onboard GigaRAID IT8212F chipset
On-Board SATA RAID — Onboard SiS 964
— CPU temperature detect
— System Voltage detect
— Line Out / 2 front speaker
— Line In / 2 rear speaker(by s/w switch)
— Mic In / center& subwoofer(by s/w switch)
— SPDIF Out /SPDIF In
— CD_In / AUX_IN / Game Connector
— 1 RJ45 port
— Supports data striping (RAID 0) or mirroring (RAID 1) or
striping+mirroring (RAID 0 + RAID 1)
— Support 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
— 2 Serial ATA connectors in 150 MB/s operation mode
— Supports Disk striping (RAID0) or DISK Mirroring (RAID1)
— Support JBOD function
— Supports UDMA up to 150 MB/sec
— UDMA and PIO Modes
— Up to 2 SATA Device
- 6 -GA-8S655TX Ultra Motherboard
English
On-Board IEEE1394 — Built-in TI TSB43AB23
PS/2 Connector — PS/2 Keyboard interface and PS/2 Mouse interface
BIOS — Licensed AWARD BIOS
— Supports Dual BIOS /Q-Flash
— Supports Face Wizard
Additional Features — PS/2 Keyboard power on by password
— PS/2 Mouse power on
— STR(Suspend-To-RAM)
— AC Recovery
— USB KB/Mouse wake up from S3
— Supports EasyTune 4
— Supports @BIOS
Overclocking — Over Voltage (CPU/DRAM/AGP) by BIOS
— Over Clock (CPU/DRAM/AGP) by BIOS
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® Pentium 4 Processor with HT Technology
- Chipset: An SiS® Chipset that supports HT Technology
- 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,Memory,Cards… .etc.
Introduction- 7 -
GA-8S655TX Ultra Motherboard Layout
English
KB_MS
CPU_FAN
PWR_FAN
COMA
COMB
R_USB
USB_LAN
MIC_IN
LINE_OUT
CODEC
SUR_CEN
IT8705
BACKUP
BIOS
GAME
LPT
CD_IN
LINE_IN
F_AUDIO
AUX_IN
Dual Channel DDR
MAIN
BIOS
ATX_12V
RTL8 110S
DDR 400
P4 Titan
IR
SPDIF_IO
NB_FAN
AGP 8X
INFO_LIN K
SOC KET4 78
SiS 655TX
F1 _13 94
PCI1
PCI2
PCI3
PCI4
TSB43AB 23
PCI5
F2 _13 94
RAM_LED
Hyper Threading
Support
GA-8S655TX Ultra
AGP
DDR1
DDR2
BAT
IDE4
F_U SB1
DDR3
SiS 964
F_U SB2
IDE2
DDR4
GigaRA ID
CL R_PWD
PWR_L ED
ATX
IDE1
FDD
SYS _FAN
SATA 1
SATA 0
IT82 12
IDE3
F_PANEL
- 8 -GA-8S655TX Ultra Motherboard
English
Block Diagram
AGPCLK
(66M Hz)
5 PCI
PCICLK
(33M Hz)
AGP 4X/8X
GigaRAID
IT8212
IDE4
IDE3
RJ45
RTL8110S
AC97 Link
AC97
CODEC
MIC
LINE-IN
TSB43AB23
8 USB
LINE-OUT
TI
Pentium 4
Socket 478
CPU
SiS 655TX
SiS 964
Ports
CPUCLK+/- (100/133/200 MHz)
System Bus
400/533/800 M Hz
266/333/400 M Hz
ZCLK (66/133M Hz)
HCLK+/- (100/133/200MHz)
48 MHz
LPC BUS
ATA33/66/100
/133 IDE Channels
Serial ATA
Channels
66/133 MHz
33 MHz
14.318 MHz
IT8705
33 MHz
BIOS
24 MHz
DDR
Game Port
Floppy
LPT Port
PS/2
KB/Mouse
COM
Ports
PCICLK (33MHz)
USBCLK (48MHz)
14.318 MHz
33 MHz
CLK GEN
IEEE 1394 Ports
ZCLK (66/133M Hz)
CPUCLK+/- (100/133/200MHz)
AGPCLK (66MHz)
HCLK+/- (100/133/200MHz)
Introduction- 9 -
English
- 10 -GA-8S655TX Ultra Motherboard
English
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 4
Step 3
Step 4
Step 1
Step 2
Step 4
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:
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.
Please make sure the CPU type is supported by the motherboard.
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-8S655TX Ultra Motherboard
English
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 cooling 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.
1. Fasten the cooling fan supporting-base
onto the CPU socket on the
mainboard.
2. Make sure the CPU fan is plugged to
the CPU fan connector, than install
complete.
Introduction- 13 -
Step 2: Install memory modules
English
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.
Before installing the processor and heatsink, adhere to the following warning:
When RAM_LED is ON, do not install/remove DIMM from socket.
Please note that the DIMM module can only fit in one direction due to the one notches.
Wrong orientation will cause improper installation. Please change the insert orientation.
Notch
DDR
GA-8S655TX Ultra supports the Dual Channel Technology. After operating the Dual Channel Technology,
the bandwidth of Memor y Bus will add double up to 6.4GB/s.
GA-8S655TX Ul tra includes 4 DIMM sockets, and each Channel has two DIM M sockets as following:
Channel A : DIM M 1, DIM M 2
Channel B : DIMM 3, DIMM 4
If yo u want to operate the Dual Channel Technology, please note the following explanations due
to the lim itation of SiS® chipset specificati ons.
1. One/three DDR memory module is installed: The Dual Channel Technology can't operate
when only one or three DDR m emory module is installed.
- 14 -GA-8S655TX Ultra Motherboard
English
2. Two DDR m emory modules are installed (the same mem ory size and type): The Dual
Channel Technology will operate when two me mory modules are inserted in dividually into
Channel A and B. If you install two mem ory modules in the same channel, the Dual Channel
Techno logy will not operate. Additiona lly, you can boot the system only when one of the
mem ory modules is inserted into Channel A or Channel B. On the other hand, the memory
module must be inserted into any sockets.
3. Four DDR mem ory modules are installed: If you install four m emory modules at the same
time, the D ual Channel Technology will operate only when those modules have the same
mem ory size and type.
We'll strongly recommend our user to slot into two DDR memory modules into the DIMMs with the
same color in order for Dual Channel Technology to work.
The following table is for Dual Channel Technology combination:
l Figure 1: D ual Channel Technology (DS: Double Side, SS: Single Side)
DIMM 1 DIMM 2 DIMM 3 DIMM 4
2 me mory module s
4 me mory module s
DS/SS X DS/SS X
DS/SS X X DS/SS
X DS/SS DS/SS X
X DS/SS X DS/SS
DS/SS DS/SS DS/SS DS/SS
- 15 - Hardware Installation Process
1. The DIMM slot has a notch, so the DIM M memory
English
2. Insert the DIM M m emory module vertically into
3. Close the plastic clip at both edges of the DIM M
DDR Introduction
performance and cost-effective solution that allows easy adoption for memory vendors, OEMs,
and system integrators.
SDRAM architecture, yet make the awesome advances in solving the system performance
bottleneck by doubling the memory bandwidth. Nowadays, with the highest bandwidth of
3.2GB/s of DDR400 memory and complete line of DDR400/333/266/200 memory solutions, DDR
memory is the best choice for building high performance and low latency DRAM subsystem that
are suitable for servers, workstations, and full range of desktop PCs.
module can only fit in one direction.
the DIMM slot. Then push it down.
slots to lock the DIMM module.
Reverse the installation steps when you wish
to remove the DIM M module.
Established on the existing SDRAM infrastructure, DDR (Double Data Rate) memory is a high
DDR memory is a great evolutionary solution for the PC industry that builds on the existing
- 16 -GA-8S655TX Ultra Motherboard
English
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, necessary 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.
Please carefully pull out the sm all white- drawable bar
at the end o f the AGP slot when you try to instal l/
Uninstall the AGP card. Please align the AGP card to
AGP Card
the onboard AGP slot and press firmly down on the slot
.Make sure your AGP card is locked by the sm all whitedrawable bar.
- 17 - Hardware Installation Process
Step 4: Connect ribbon cables, cabinet wires, and power
supply
English
Step 4-1: I/O Back Panel Introduction
u
v
w
u PS/2 Keyboard and PS/2 Mouse Connector
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.
vParallel Port, Serial Port and VGA Port (LPT/COMA/COMB)
Parallel Port
(25 pin Female)
This connector supports 2 standard COM ports
and 1 Parallel port. Device likeprinter can be
connected to Parallel port; mouse and modem
etc can be connected to Serial ports.
y
x
COMA COMB
Serial Port (9 pin Male)
- 18 -GA-8S655TX Ultra Motherboard
English
w/x USB / LAN Connector
USB 5
USB 4
LAN
USB 7
USB 6
LAN is fast Ethernet with 10/100/100 Mbps
speed.
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.
y Audio Connectors
Line In(Rear Speaker)
Line Out(Front Speaker)
MIC In(Center and Subwoofer)
If you want the detail information for 2-/4-/6-channel audio setup
installation, please refer to page 89.
After install onboard audio driver, you may
connect speaker to Line Out jack, micro
phone 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 28, and contact your
nearest dealer for optional SUR_CEN cable.
- 19 - Hardware Installation Process
Step 4-2: Connectors & Jumper Setting Introduction
English
1 3
6
16
14
17
15
21
10
24182019
23
22
11
1) ATX_12V 15) SUR_CEN
2) ATX 16) CD_IN
3) CPU_FAN 17) AUX_IN
4) SYS_FAN 18) SPDIF_IO
5) PWR_FAN 19) IR
6) NB_FAN 20) F_USB1/F_USB2
7) IDE1/IDE2 21) GAME
8) IDE3/IDE4 22) INFO_LINK
9) FDD 23) F1_1394
10) RAM_LED 24) F2_1394
11) PWR_LED 25) SATA0/SATA1
12) BAT 26) CLR_PWD
13) F_PANEL
14) F_AUDIO
5
2
7
9
4
25
12
8
26
13
- 20 -GA-8S655TX Ultra Motherboard
English
1) ATX_12V (+12V Power Connector)
This connector (ATX _12V) suppliesthe CPU operation voltage (Vcore). If this " ATX_ 12V connector" is
not connected, system cannot boot.
2
4
1
3
Pin No. Definition
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.
Pin No. Definition
1 3.3V
10
1
2 3.3V
20
3 GND
4 VCC
5 GND
6 VCC
7 GND
8 Power Good
9 5V SB(stand by +5 V)
10 +12V
11 3.3V
12 -12V
13 GND
14 PS_O N(softOn/ Off)
11
15 GND
16 GND
17 GND
18 -5V
19 VCC
20 VCC
- 21 - Hardware Installation Process
3) CPU_FAN (CPU FAN Connector)
English
4) SYS_FAN (System FAN Connector)
Please note, a proper installation of the CPU cooler is essential to prevent the CPU from running
under abnormal condition or dam aged by overheating.The CPU fan connector supports Max.
current up to 600 mA.
Pin No. Definition
1 GND
1
This connector allows you to link with the cooling fan on the system case to lower the system
temperature.
2 +12V
3 Sense
Pin No. Definition
1 GND
1
- 22 -GA-8S655TX Ultra Motherboard
2 +12V
3 Sense
English
5) PWR_FAN (Power 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
1 GND
2 +12V
3 Sense
6) NB_FAN
If you installed wrong direction, the Chip Fan will not work. Sometimes will damage the Chip Fan.
(Usually black cable is GND)
Note: If the NorthBridg e on the motherboard has a fan sink, then the motherboard contains a
NB_FAN connector.
1
- 23 - Hardware Installation Process
Pin No. Definition
1 VCC
2 GND
7) IDE1/ IDE2(IDE1/IDE2 Connector)
English
Please connect first harddisk to IDE1 and connect CDROM to IDE2. The red stripe of the ribbon cable
must be the same side with the Pin1.
40
2
IDE2
39
1
IDE1
8) IDE3 / IDE4 (RAID/ATA133, Green Connector)
Important Notice: The red stripe of the ribbon cable must be the same side with the Pin1. If you wish to
use IDE3 and IDE4, ple ase use it in unity with BIOS (either RAID or ATA133). Then, install the correct
driver to have proper operation. For deta ils, please refer to the GigaRAID manual.
139
IDE3
IDE4
240
- 24 -GA-8S655TX Ultra Motherboard
English
9) FDD (Floppy Connector)
Please connect the floppy drive ribbon cables to FDD. It supports 360K,720K,1.2M,1.44M and
2.88Mbytes floppy disk types. The red stripe of the ribbon cable m ust be the same side with the Pin1.
34
2
33
1
10) 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.
+-
- 25 - Hardware Installation Process
11) PWR_LED
English
12) BAT (Battery)
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.
Pin No. Definition
1
1 MPD+
2 MPD3 MPD-
If yo u want to erase CMOS...
1.Turn OFF the computer a nd unplug the power cord.
2.Remov e the battery, wait for 30 second.
3.Re-install the battery.
4.Plug the power cord and turn ON the com puter.
- 26 -GA-8S655TX Ultra Motherboard
+
CAUTION
v Danger of explosi on if batte ry is incorrectly
replaced.
v Replace only with th e same or equivalent
type recom mended by the m anufacturer.
v Dispose of used batteries according to the
manufacturer's instructions.
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