
2-2 JUMPER SETTINGS
INTEL® CPU CLOCK
P54C 75 3.3V
P54C 90 3.3V
P54C 100 3.3V
P54C 120 3.3V
P54C 133 3.3V
P54C 150 3.3V
P54C 166 3.3V
P55C 166 2.8/3.3V
P54C 180 3.3V
P54C 200 3.3V
P55C 200 2.8/3.3V
P55C 233 2.8/3.3V
RATIO
SPEED
50MHZ 1.5 ON ON ON OFF ON OFF 1-2,5-6,7-8
60MHZ 1.5 OFF OFF ON OFF ON OFF 1-2,5-6,7-8
66MHZ 1. 5 O FF OFF OFF OFF ON OFF 1-2, 5-6, 7-8
60MHZ 2 OFF OFF ON 1-2 O N OFF 1-2,5-6,7-8
66MHZ 2 OFF OFF OFF 1-2 ON OFF 1-2,5-6,7-8
60MHZ 2.5 OFF OFF O N 1-2, 3-4 ON OFF 1-2,5-6. 7-8
66MHZ 2.5 OFF OFF OFF 1-2, 3-4 ON OFF 1-2,5-6,7-8
66MHZ 2.5 OFF OFF OFF 1-2, 3-4 OFF 1-2,3-
60MHZ 3 OFF OFF ON 3-4 O N OFF 1-2,5-6,7-8
66MHZ 3 OFF OFF OFF 3-4 ON OFF 1-2,5-6,7-8
66MHZ 3 OFF OFF OFF 3-4 OFF 1-2,3-
66MHZ 3. 5 O FF OFF OFF OFF OFF 1-2,3-
JP2
JP3 JP4 JP5 JP7
JP8 JP9
7-8
4
7-8
4
7-8
4
AMD® CPU
FOR (PRXXXAB)
PR75 3.52V
PR90/PR120 3.52V
PR100/PR133 3.52V
PR166 3.52V
K6 PR166 2.9/3.3V
K6 PR200 2.9/3.3V
K6 PR233 3.2/3.3V
CYRIX® CPU
P120+ 3.52V
P150+ 3.52V
P166+ 3.52V
P150+ 2.8/3.3V
6X86L
P166+ 2.8/3.3V
6X86L
MX PR166 2.9/3.3V 60MHZ 2.5 OFF OFF ON 1-2, 3-4OFF 1-2, 3-4 1-2,7-8
MX PR166 2.9/3.3V
MX PR200 2.9/3.3V 66MHZ 2.5 OFF OFF OFF 1-2, 3-4OFF 1-2, 3-4 1-2,7-8
CLOCK
SPEED
50MHZ 1.5 ON ON ON OFF ON OFF 1-2,3-4,5-6,7-8
60MHZ 1.5 OFF OFF ON OFF ON OFF 1-2,3-4,5-6,7-8
66MHZ 1.5 OFF OFF OFF OFF ON OFF 1-2,3-4,5-6,7-8
66MHZ 2.5 OFF OFF OFF 1-2, 3-4 ON OFF 1-2,3-4,5-6,7-8
66MHZ 2.5 OFF OFF OFF 1-2, 3-4 OFF 1-2,3-4 1-2, 7-8
66MHZ 3 OFF OFF OFF 3-4 OFF 1-2,3-4 1-2, 7-8
66MHZ 3.5 OFF OFF OFF OFF OFF 1-2, 3-4 5-6, 7-8
CLOCK
SPEED
50MHZ 2 ON ON ON 1-2 ON OFF 1-2,3-4,5-6,7-8
60MHZ 2 OFF OFF ON 1-2 ON OFF 1-2,3-4,5-6,7-8
66MHZ 2 OFF OFF OFF 1-2 ON OFF 1-2,3-4,5-6,7-8
60MHZ 2 OFF OFF ON 1-2 OFF 1-2, 3-4 7-8
66MHZ 2 OFF OFF OFF 1-2 OFF 1-2, 3-4 7-8
66MHZ 2 OFF OFF OFF 1-2 OFF 1-2, 3-4 1-2,7-8
JP2 JP3 JP4 JP5 JP7 JP8 JP9
RATIO
JP2 JP3 JP 4 JP5 JP7 JP8 JP9
RATIO

EXPLANATION OF JUMPER SETTING
JP1
: DIMM VOLTAGE SELECTOR
3.3V DIMM 5V DIMM
JP1 3-5, 4-6 1-3, 2-4
JP2-JP4
CPU CLOCK SELECTOR
50 MHZ 60 MHZ 66.6 MHZ
JP2 ON OFF OFF
JP3 ON OFF OFF
JP4 ON ON OFF
JP7,JP8
SINGLE /DUAL VOLTAGE CPU SELECTOR
SINGLE VOLTAGE
CPU
DUAL VOLTAGE
CPU
JP7 ON OFF
JP8 OFF 1-2, 3-4
)CAUTION !
CPU WILL BE SERIOUSLY DAMAGED IF JP6 & JP8(1-2, 3-4)
ARE SET "ON" SYNCHRONOUSLY.
JP5 :
NOTE : JP5 (PIN5, PIN6) RESERVED.
CPU FREQUENCY RATIO SELECTOR
1.5
2.0 X2.5 X 3.0 X 3.5
JP5 OFF 1-2 1-2, 3-4 3-4 OFF
JP9 :
VCORE VOLTAGE SELECT
JP9 VOLTAGE
OUTPUT
OR
JP9 VOLTAGE
OUTPUT
1-2, 3-4, 5-6 3.50V 1-2, 7-8 2.90V
1-2, 5-6, 7-8 3.30V 7-8 2.80V
5-6, 7-8 3.20V 1-2, 5-6 2.50V
1-2, 3-4, 7-8 3.10V 1-2 2.10V
3-4, 7-8 3.00V OFF 2.00V

JP10
: BATTERY SELECTOR
NORMAL CLEAR CMOS
JP10
JP12
: FLASH ROM VOLTAGE SELECTOR
(DEFAULT) 2-3
1-2
5V FLASH ROM 12V FLASH ROM
JP12 1-2 2-3
JP17
: WIN95 SOFTWARE POWER DOWN SELECTOR
ENABLED DISABLED
JP17 ON OFF
JP11
: CASE CONNECTOR
JP18
: AT / ATX POWER SELECTOR
AT POWER ATX POWER
JP18 OFF ON
CN1,
CN2
:
PRIMARY / SECONDARY IDE CONNECTOR
PCI IDE controller connector supports up to four hard disk d
,CD-ROM , 120MB floppy (reserv ed for future BIOS ) and other devices
to CN1 and CN2.
CN3 :
FLOPPY DISK CONNECTOR
Standard floppy disk connector supports 360K , 720K ,1.2M , 1.44
and 2.88M floppy disk type.
CN4
: PARALLEL PORT CONNECTOR
PARALLEL port connector supports standard printer port,enhance
parallel port (EPP), extended capabilities parallel port (ECP).
CN5,CN6
SERIAL port connector supports 16550a high speed communicatio
port that send/receive 16 bytes fifos.
: SERIAL PORT CONNECTOR.

CN7
: USB (UNIVERSAL SERIAL BUS) CONNECTOR .
USB connector supports USB device.
USB PIN OUT
USB1 USB2
PIN1
+5V
PIN2
USBP0-
PIN3
USBP0+
PIN4
GND
PIN5
GND
NOTE : USB (UNIVERSAL SERIAL BUS) A ND IRCON CONNE CTOR
ARE OPTIONAL.
CN8
: PS/2 MOUSE CONNECTOR.
mouse connector supports 5-pin PS/2 mouse .
PIN6
PIN7
PIN8
PIN9
PIN10
+5V
USBP1 USBP1+
GND
GND
CN9 : IRCON (INFRARED) CONNECTOR
IR connector supports 5-pin IR device.
NOTE : IR uses same I/O port as COM2. THERE is no any hardware
jumper setting for IR/COM2 on this main board but customer
needs to set proper BIOS setting for "IRDA " , "ASKIR" or
PS/2 MOUSE PIN OUT
PIN # 1 MOUSE CLOCK
PIN # 2 MOUSE DATA
PIN # 3 NONE
PIN # 4 GND
PIN # 5 VCC
IR CONNECTOR PIN OUT
PIN 1
VCC
PIN 2
NONE
PIN 3RXPIN 4
GND
PIN 5
TX
I430TX PAGE 6

"DISABLED"(DEFAULT) UNDER "INFRA RED (IR)
function" of
"INTEGRATED Peripheral" according to the following table:
IRDA 1.0 ASKIR DISABLED
(UNDER INTEGRATED
PERIPHERALS)"INFRA
RED
(IR) FUNCTION "
USE IRDA
1.0 ON
IRCON.
USE AMPLITUDE
SHIFT KEYED IR
ON IRCON .
USE COM2
(DEFAULT
)