System-Board Switches And Jumpers - IBM x3250 - System M3 - 4251 Installation And User Manual

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
JP1
JP6
Jumper name
Clear CMOS jumper
Boot block jumper
Chapter 2. Installing optional devices
Jumper setting
v Pins 1 and 2: Keep CMOS
data (default).
v Pins 2 and 3: Clear CMOS
data (including power-on
password)
v Pins 1 and 2: Boot from
primary BIOS page
(default).
v Pins 2 and 3: Boot from
backup BIOS page.
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