Gigabyte 686LX4 User manual

R-01-01-080119
686LX4
USER'S MANUAL
1. System power on by PS/2 Mouse: You can power on the
system by double clicking the right or left button of your
PS/2 Mouse.
2. System power on by Keyboard: If your ATX power supply
supports 1 ampere 5V Stand-By function, you can power on
your system by entering password from keyboard.
3. Supports 3 steps ACPI LED selectable.
4. Modem Ring-On. (COM B)
5. Wake-Up on LAN. (on J13)
Pentium

II Processor MAINBOARD
REV. 1.0 First Edition

686LX4
1
The author assumes no responsibility for any errors or omissions that may
appear in this document nor does it make a commitment to update the
information contained herein.
Third-party brands and names are the property of their respective owners.

Quick Installation Guide
2
January 19, 1998 Taipei, Taiwan
I. Quick Installation Guide :
CPU SPEED SETUP
The default system bus speed is 66.6MHz. The user can change the DIP
SWITCH (SW) selection to set up the CPU speed for 200 - 633MHz
processor.
The CPU speed MUST match with the frequency RATIO. It will cause
system hanging up if the frequency RATIO is higher than that of CPU.
DIP SWITCH (SW)
1 2 3 4
FREQ.
RATIO
EXT.CLK.
MHz
INT.CLK.
MHz CPU Type
OFF ON OFF OFF 366 200 PentiumII 200 MHz
ON ON OFF OFF 3.5 66 233 PentiumII 233 MHz
OFF OFF ON OFF 466 266 PentiumII 266 MHz
ON OFF ON OFF 4.5 66 300 PentiumII 300 MHz
OFF ON ON OFF 566 333 PentiumII 333 MHz
ON ON ON OFF 5.5 66 366 PentiumII 366 MHz
Main Clock JP4 JP3 JP2
66 MHz 1-2 1-2 1-2

686LX4
3
1. PentiumII 200 MHz
PIIX4
INTEL
440LX
JP2
JP3
JP4
3 2 1
ON
4321
2. PentiumII 233 MHz
PIIX4
INTEL
440LX
JP2
JP3
JP4
3 2 1
ON
4321

Quick Installation Guide
4
3. PentiumII 266 MHz
PIIX4
INTEL
440LX
JP2
JP3
JP4
3 2 1
ON
4321
4. PentiumII 300 MHz
PIIX4
INTEL
440LX
JP2
JP3
JP4
3 2 1
ON
4321
5. PentiumII 333 MHz

686LX4
5
PIIX4
INTEL
440LX
JP2
JP3
JP4
3 2 1
ON
4321
6. PentiumII 366 MHz
PIIX4
INTEL
440LX
JP2
JP3
JP4
3 2 1
ON
4321
II. Jumper setting :
SPK : Speaker Connector

Quick Installation Guide
6
1
PIIX4
INTEL
440LX
PIN
FUNCTION
1
VCC
2
NC
3
NC
4
Data
SPK
1
RST : Reset Switch
PIIX4
INTEL
440LX
RST
Open: Normal Close: Reset System
PWR : Power LED Connector

686LX4
7
PIIX4
INTEL
440LX
Power LED
PIN
FUNCTION
1
LED (+)
2
NC
3
LED (-)
1
HD : IDE Hard Disk Active LED
PIIX4
INTEL
440LX
PIN
FUNCTION
1
LED (+)
2
LED (-)
1
HD LED
IR : Infrared Connector

Quick Installation Guide
8
PIIX4
INTEL
440LX
PIN
FUNCTION
1
IR Data Output
2
GND
1
IR Connector
3
IR Data Input
4
Signal
5
POWER (+)
GN : Green Function Switch
PIIX4
INTEL
440LX
GN
Open: Normal Close: Enter Green Mode
Soft POWER : Soft Power Connector

686LX4
9
PIIX4
INTEL
440LX
1
Soft Power
POWER1 : Power Connector
PIIX4
INTEL
440LX
1
Power Good
Pin No.
3,5,7,13,
15-17
4,6,19,20
10
12
18
8
9
14
Function
GND
VCC(+5V)
+12V
-12V
-5V
5V SB
PS-ON
11
PS/2 Mouse / Keyboard Connector

Quick Installation Guide
10
PIIX4
INTEL
440LX
PS/2 Keyboard
PS/2 Mouse
J1 : CPU Cooling Fan Power Connector
PIIX4
INTEL
440LX
PIN
FUNCTION
1
GND
2
+12V
3
SENSE
FAN Power
1
IDE1: For Primary IDE port

686LX4
11
PIIX4
INTEL
440LX
1
1
1
FLOPPY
IDE1
IDE2
1
RED LINE
IDE2: For Secondary IDE port
PIIX4
INTEL
440LX
1
1
1
FLOPPY
IDE1
IDE2
1
RED LINE
J3 : FLOPPY PORT

Quick Installation Guide
12
PIIX4
INTEL
440LX
1
1
1
FLOPPY
IDE1
IDE2
1
RED LINE
LPT PORT / COM A / COM B
PIIX4
INTEL
440LX
1
1
1
FLOPPY
IDE1
IDE2
COM B
LPT PORT
COM A
JP1 : Keyboard Power On

686LX4
13
PIIX4
INTEL
440LX
1
1
1
FLOPPY
IDE1
IDE2
Keyboard Power On
Default: Disable
1
2
3
1-2
2-3
Enable
Disable
CN1: USB Port
PIIX4
INTEL
440LX
1
1
1
FLOPPY
IDE1
IDE2
Pin No.
Function
1
2
3
4
5
6
7
8
USB D0-
USB D0+
GND
USB V0
GND
USB V0
USB D1-
USB D1+
J16: ATX Power Control Selection

Quick Installation Guide
14
PIIX4
INTEL
440LX
1
1
1
FLOPPY
IDE1
IDE2
J16
Open: Soft Off Close: Full On
J13:Wake On LAN
PIIX4
INTEL
440LX
11
1
FLOPPY
IDE1
IDE2
Pin No. Function
1+5V SB
2GND
3Signal
1
J15:Creative PCI Sound Card Support

686LX4
15
PIIX4
INTEL
440LX
11
1
FLOPPY
IDE1
IDE2
Pin No.
Function
1Signal
2GND
3NC
4Signal
5GND
6Signal
1 2
5 6
4

Quick Installation Guide
16
III. Top Performance Test Setting:
Users have to modify the value for each item in chipset features as follow
for top performance setting.
ROM PCI / ISA BIOS
CHIPSET FEATURES SETUP
AWARD SOFTWARE, INC.
: Select Item
ESC
F1
F5
F7 : Load Setup Defaults
: Quit
: Help
: Old Values
PU/PD/+/-
(Shift)F2
: Modify
: Color
DRAM Speed Selection
: Fast
Auto Configuration
DRAM Data Integrity Mode
: Enabled
Memory Hole At 15M-16M
: Disabled
: Non-ECC
Video RAM Cacheable
: Disabled
SDRAM RAS-to-CAS Delay
SDRAM RAS Precharge Time
SDRAM CAS latency Time
: Fast
: Fast
: 2
Delayed Transaction
: Disabled
Memory Buffer Strength
: Middle
16 Bit I/O Recovery Time
: 1
¡ô¡õ¡÷¡ö
CPU Temperature Select
Slow Down CPU Duty Cycle
Current CPUFAN1 Speed
: Disabled
Current +3.3 V
: 3.53 V
: 4470 RPM
Current CPUVCORE A
: 2.83 V
Current +12 V
Current - 12 V
Current - 5 V
: 12.28 V
:-11.81 V
:-5.04 V
Current +5 V
: 4.99 V
Current CPU1 Temperature
Current CPUVCORE B
: 1.50 V
: 70
/158
¢K¢J
: 39
/102
¢K¢J
Current Battery Life : OK