The following tables list the jumper settings and their corresponding
functions:
Table 1-1
System Jumper Settings
Jumper
Setting
Function
JP4
H/W Monitoring
1-2
2-3
Disable
Enable
JP10
Password
1-2
2-3*
Check Password
Bypass password
JP12
Flash Function
1-2
2-3*
Disable
Enable
JP16
Flash Power
1-2
2-3*
+12V (Intel, MX)
+5V (ATMEL,SST)
JP23
H/W Monitor Vio
1-2
2-3*
VRE, K5 Type CPU
Others
JP25
Acer/OEM BIOS
1-2
2-3*
OEM
Acer
JPX1
LAN Card Selection
1-2
2-3*
Active High
Active Low
Table 1-2
Intel P55C/P54C CPU Clock and Voltage Jumper
Setting
CPU Clock Jumper Setting
CPU Freq.
(MHz)
Host Bus
Freq.
Core/Bus
Clock
Host Clock
Jumpers
Clock Ratio
Jumpers
(MHz)
Ratio
JP5
JP7/JP14
JP8/JP15
JP20
JP21
P55C/233
66
7/2
1-2
1-2
1-2
1-2 1-2
P55C/200
66
3/1
1-2
1-2
1-2
1-2 2-3
P55C/166
66
5/2
1-2
1-2
1-2
2-3 2-3
P54C/200
66
3/1
1-2
1-2
1-2
1-2 2-3
P54C/166
66
5/2
1-2
1-2
1-2
2-3 2-3
* Default Setting
System Board
1-
9