System-board switches and jumpers
The following illustration shows the switches and jumpers on the system board.
The following table describes the jumpers on the system board.
Table 2. System board jumpers
Jumper number
Jumper name
Jumper setting
JP1
Clear CMOS jumper
v
Pins 1 and 2: Keep CMOS
data (default).
v
Pins 2 and 3: Clear CMOS
data (including power-on
password)
JP6
Boot block jumper
v
Pins 1 and 2: Boot from
primary BIOS page
(default).
v
Pins 2 and 3: Boot from
backup BIOS page.
Chapter 2. Installing optional devices
23
Summary of Contents for 4251
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