System-Board Jumpers - IBM x3630 M4 Type 7158 Installation And User Manual

System-board jumpers

This section describes the jumpers on the system board.
Important:
1. Before you change any switch settings or move any jumpers, turn off the server;
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System x3630 M4 Type 7158: Installation and User's Guide
Table 3. System board jumpers
Jumper number
CN14
J2
Notes:
1. If no jumper is present, the server responds as if the pins are set to 1 and 2.
2. Changing the position of the UEFI recovery jumper from pins 1 and 2 to pins 2 and 3
before the server is turned on sets the UEFI recovery process. Do not change the
jumper pin position after the server is turned on. This can cause an unpredictable
problem.
then, disconnect all power cords and external cables. (Review the information in
Jumper name
Clear CMOS jumper
UEFI boot recovery jumper
Jumper setting
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
loads the default UEFI
settings.
Note 2
v Pins 1 and 2: Normal
(default) Loads the primary
firmware ROM page.
v Pins 2 and 3: Loads the
secondary (backup)
firmware ROM page.
Notes 1 and 2