
GA-8S661GXMP(-C)
Intel® Pentium® 4 Socket 478
Rev. 1003
12MC-S661GXMP-1003

© 2006 GIGA-BYTE TECHNOLOGY CO., LTD. All rights reserved.
http://www.gigabyte.com.tw

GA-8S661GXMP(-C) ......................................................................... 6
................................................................................................. 7
................................................................................................... 9
1-1 ..................................................................................... 9
1-2
1-3
1-3-1 ........................................................................................ 11
1-3-2 ................................................................... 12
1-4 ................................................................................................. 13
1-5
1-6
1-7
..................................................................................................... 10
................................................................... 11
................................................................................................. 14
................................................................................... 15
....................................................................................... 16
BIOS ....................................................................................... 27
(BIOS E2) .................................................................... 28
2-1 Standard CMOS Features (
2-2 Advanced BIOS Features (
2-3 Integrated Peripherals (
2-4 Power Management Setup (
2-5 PnP/PCI Configurations (
2-6 PC Health Status (
2-7 MB Intelligent Tweaker (M.I.T.) (
2-8 Load Fail-Safe Defaults (
2-9 Load Optimized Defaults (
2-10 Set Supervisor/User Password (
2-11 Save & Exit Setup (
2-12 Exit Without Saving (
CMOS ) ........................................... 30
BIOS ) ..................................... 32
) ....................................................... 34
) ............................................... 36
PCI ) ............................. 38
) ............................................................. 39
/ ) ..................................... 40
Fail-Safe ) .......................................... 42
Optimized ) ...................................... 42
/ ) ................... 43
SETUP ) ................................ 44
SETUP ) .......................... 44
- 4 -

....................................................................................... 45
3-1 ............................................................................... 45
3-2
3-3
3-4
3-5
............................................................................................ 46
..................................................................................................... 46
..................................................................................................... 47
................................................................................................. 47
.......................................................................................................... 49
4-1 ............................................................................................ 49
4-1-1 Xpress Recovery2 .................................................................................. 49
4-1-2 BIOS ...................................................................................... 51
4-1-3 / / ........................................................ 60
4-2 ..................................................................................................... 68
- 5 -

GA-8S661GXMP(-C)
KB_MS
COMA
LPT
CPU_FAN
COMB
-C
ATX
#
FDD
VGA
USB
USB
AUDIO
CODEC
LAN*
IT8705AF
CD_IN
F_AUDIO
BIOS
ATX_12V
ICS1883*
AGP
SPDIF_IO
SUR_CEN
Socket 478
SiS 661GX
PCI1
PCI2
PCI3
BAT
F_USB1
GA-8S661GXMP
DDR2
DDR1
SiS 964L
F_USB2
PWR_LED
CI
IDE2 IDE1
CLR_CMOS
SYS _FAN
F_PANEL
"*" GA-8S661GXMP
"#" GA-8S661GXMP-C
- 6 -

1-2
Socket 478 Intel® Pentium® 4 (Northwood, Prescott) HT
533/400MHz FSB
L2 CPU
: SiS® 661GX
: SiS® 964L
2 184-pin DDR DIMM
DDR400/333/266 DIMM
2GB DRAM
1 AGP AGP 4X/8X (1.5V)
3 PCI
IDE 2 IDE (UDMA 33/ATA 66/ATA 100/ATA 133) 4 IDE
1 2
1 Normal/EPP/ECP
1 VGA 1 COMA COMB
8 USB 2.0/1.1 ( x 4 x 4-- )
1
1 PS/2
1 PS/2
SiS® 661GX
* ICS1883
1 RJ45
Realtek ALC655 CODEC
Line In ; Line Out ; MIC In
2/4/6
SPDIF /
CD In
Jack Sensing
I/O IT8705AF
CPU /
CPU
BIOS AWARD BIOS
Q-Flash
@BIOS
EasyTune
Micro-ATX ; 24.4 x 23
"*" GA-8S661GXMP
GA-8S661GXMP(-C) - 10 -

1-7
3 1 2
6
5
7
17
14
4
8
9 12 13
111510
16
1) ATX_12V 10) SUR_CEN
2) ATX 11) SPDIF_IO
3) CPU_FAN 12) F_USB1/F_USB2
4) SYS_FAN 13) CI
5) IDE1/IDE2 14) CLR_CMOS
6) FDD 15) COMB
7) F_AUDIO 16) PWR_LED
8) F_PANEL 17) BAT
9) CD_IN
GA-8S661GXMP(-C) - 16 -

3/4) CPU_FAN / SYS_FAN (
+12V (GND)
CPU
+12V 3-pin
1
CPU_FAN
1
SYS_FAN
1
2 +12V
3
5) IDE1/IDE2 (IDE )
IDE IDE IDE IDE
IDE ( ) IDE
Master Slave ( IDE
) : IDE
IDE
40
40 39
39
GA-8S661GXMP(-C) - 18 -
21
21
IDE
IDE

6) FDD ( )
7) F_AUDIO ( )
360KB 720KB 1.2MB 1.44MB 2.88MB
3334
12
Pin5-6 Pin9-10 Jumper
10 9
- 19 -
1 MIC
2
3 MIC_BIAS
4
5 Front Audio (R)
1
2
6 Rear Audio (R)/ Return R
7
8
9 Front Audio (L)
10 Rear Audio (L)/ Return L

8) F_PANEL ( )
Message LED/
Power/
Sleep LED
MSG+
2
1
HD+
IDE Hard Disk Active LED
HD (IDE Hard Disk Active LED) Pin 1: LED anode(+)
Pin 2: LED cathode(-)
M
SPEAK (Speaker Connector) Pin 1:
Pin 2- Pin 3:
Pin 4: Data(-)
RES (Reset Switch) Open: Normal
Close: Reset Hardware System
0
PW (Power Switch) Open: Normal :
Close: Power On/Off : /
0
MSG(Message LED/Power/Sleep LED) Pin 1: LED anode(+)
Pin 2: LED cathode(-)
0
NC
Power
Switch
PW+
PW-
MSG-
HD-
RES+
RES-
Reset Switch
Speaker Connector
SPEAK+
NC
SPEAK-
20
19
GA-8S661GXMP(-C) - 20 -

11) SPDIF_IO (SPDIF / )
Sony/Philip Digital Interface Format / SPDIF
(AC-3)
(SPDIF In)
SPDIF
SPDIF
1
2
62
15
3 SPDIF
4 SPDIFI
5
6
12) F1_USB / F2_USB ( )
USB
USB
GA-8S661GXMP(-C) - 22 -
1
2
1
10
9
2
3 USB DX-
4 USB Dy-
5 USB DX+
6 USB Dy+
7
8
9
10