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System Board
1-7
Table 1-1
System Board Jumper Settings (continued)
Jumper
Setting
Function
CPU Type
JP8
1-2*
2-3
Intel P54C or AMD K5
Cyrix M1
CPU Core / Local Bus
Clock Ratio
JP16, JP19
1-2
*
, 1-2*
1-2, 2-3
2-3, 1-2
2-3, 2-3
Intel P54C
Intel P55C
M1 and K5
3/2
3/1
3/2, 2/1, 3/1
2/1
2/1
1/1
3/1
5/2
CPU Voltage
JP21
1-2*
2-3
3.3825V for VR and standard CPU type
3.5250V for VRE CPU type
LED Support
JP23
1-2
2-3*
For IDE and diskette drives
For IDE drive only
The jumpers JP10 ~ JP15 and JP17 are
always closed if there is no voltage regulator
module (VRM) present.
*
Default setting