PC Server 300 (Type 8640) Pentium® Board



1 Memory Connectors (J7, J8, J9, J10, J33 and J34)
2 IDE Hard Disk Drive LED Connector (W10)
SCSI Hard Disk Drive Adaptor Connector

3 Power LED Connector (W9)
4 Speaker Connector (J11)
5 Processor Socket
6 EISA Slots (J23, J24, J25, J26 and J27)
7 PCI Slots (J30, J31 and J32)
8 Mouse Port (J15)
9 Keyboard Port (J14)
10 Serial Port COM1 (J20)
11 Power Supply Connector P1 (J12)
12 Power Supply Connector P2 (J17)
13 Serial Port COM2 (J21)
14 Parallel Port (J18)
15 Real Time Clock socket
16 Diskette Drive Connector (J19)
17 Power Supply Connector P3 (J37)
18 IDE 2 Hard Disk Drive Connector (J22)
SCSI Hard Disk Drive Adapter Connector

System Board Jumper Settings

Parity Check 

Jumper Configuration Setting
J1 Pentium® parity check enabled (default)
Pentium® parity check disabled		 Installed
Not installed


DRQ Selection 

Jumper Configuration Setting
W14 DRQ6
DRQ7		 Pins 1-2
Pins 2-3


Secondary Cache Selection 

Jumper Configuration Setting
J40 5 volts for the Pentium®
5.3 volts for the Pentium®		 Installed : Jumper blocks (all pins)
Installed : Power module
J41 5.3 volts for ground Installed : Power module (ground)
J42 5.3 volts for ground Installed : Power module (ground)


Selected Jumper Default Setting 

Jumper Default Setting
J3 Pins 2-3
J4 Pins 1-2
J35 Pins 1-2


Cache Selection 

Jumper Configuration Setting
J2 Pentium® write-through cache
Pentium® write-back cache (default)		 Installed
Not installed


DACK Selection 

Jumper Configuration Setting
W16 DACK 6
DACK 7		 Pins 1-2
Pins 2-3


Keyboard Selection 

Jumper Configuration Setting
W6 PS/2 Mouse installed (default)
PS/2 Mouse not installed		 Installed
Not installed


Clock Selection 

Jumper Configuration Setting
J5 PS/2 Mouse installed (default)
PS/2 Mouse not installed		 Installed
Not installed


Pentium® Clock Selection 

Jumper Configuration Setting
J6 Oscillator for U15 (default)
Clock synthesizer		 Pins 1-2
Pins 2-3


BIOS Mode Selection 

Jumper Configuration Setting
W2 Bios in boot recovery mode Pins 1-2
W2 Bios in normal mode (default) Pins 2-3


Secondary Cache Selection 

Configuration J3 J4 J35
No secondary cache Pins 1-2 Pins 1-2 ---
Reserved Pins 1-2 Pins 2-3 ---
256KB secondary cache Pins 2-3 Pins 1-2 Pins 1-2
512KB secondary cache Pins 2-3 Pins 2-3 Pins 2-3


Jumper W17 IRQ Selection 

Selection Setting
Redirect modified PCI interrupt to IRQ 5
Redirect modified PCI interrupt to IRQ 9
Redirect modified PCI interrupt to IRQ 10
Redirect modified PCI interrupt to IRQ 11
Redirect modified PCI interrupt to IRQ 15
Redirect modified PCI interrupt to IRQ 14		 Pins 1-2
Pins 3-4
Pins 5-6
Pins 7-8
Pins 9-10
Pins 11-12


Reserved Jumpers 

Jumper Setting
W20 Pins 2-3
J5 Installed
J6 Pins 1-2

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