Technical Reference
67
2.8 Jumper Block
CAUTION
Do not move the jumper with the power on. Always turn off the power and unplug the
power cord from the computer before changing a jumper setting. Otherwise, the
board could be damaged.
Figure 20 shows the location of the jumper block. The jumper determines the BIOS
Setup program’s mode.
Table 33 lists the jumper settings for the three modes:
normal, configure, and recovery. When the jumper is set to configure mode and the
computer is powered-up, the BIOS compares the processor version and the microcode
version in the BIOS and reports if the two match.
OM18321
3
2
1
Figure 20. Location of the Jumper Block
Table 33. BIOS Setup Configuration Jumper Settings
Function/Mode Jumper Setting Configuration
Normal 1-2
123
The BIOS uses current configuration information and
passwords for booting.
Configure 2-3
123
After the POST runs, Setup runs automatically. The
maintenance menu is displayed.
Recovery None
123
The BIOS attempts to recover the BIOS configuration. Refer
to Section
3.7 for more information on BIOS recovery.
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