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Setting System Board Jumpers 6-3
The following table provides the system board jumper
settings.
System Board Jumper Settings
FUNCTION
GROUP
JUMPER
CONFIGURATION
Jumper J6M1
Processor Voltage
–
1-2
2-3
Standard (3.3 to 3.465V)
VRE (3.465 to 3.63 V)
Jumper J8A1
BIOS Recovery
–
1-2
2-3
Normal Operation (default)
Recovery Mode
Jumper J9C1
Reserved
A
1-2
Reserved (default)
BIOS (NVRAM and
ESCD Clear)
A
4-5
5-6
Normal Operation (default)
Clear CMOS
BIOS Setup Access
B
1-2
2-3
Access allowed (default)
Access denied
Host Bus Frequency
*
C
5-6
4-5
66 MHz (default)
60 MHz
Processor Frequency
D
1-2 and 4-5
1-2 and 5-6
233 MHz
200 MHz
*
Jumper also sets the PCI and ISA bus frequencies
CHANGING JUMPER SETTINGS
The following sections describe how to verify or change
jumper settings.