IBM x3100 M3 4253 - System-Board Switches and Jumpers

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: Normal
(default) - This keeps the
CMOS data.
v Pins 2 and 3: This clears
the CMOS data such as
power-on password and
administrator password,
and loads the default BIOS
settings.
JP2 Clear password jumper
v Pins 1 and 2: Normal
(default).
v Pins 2 and 3: This clears
the power-on password
and administrator
password.
JP3 BIOS recovery jumper
v Pin 1 and 2: Boot normally
(default).
v Pin 2 and 3: BIOS
recovery from a bootable
USB key which contains
the new BIOS image file.
18 System x3100 M3 Type 4253: Installation and User’s Guide