System-Board Switches And Jumpers - IBM x3690 X5 Service Manual

System-board switches and jumpers

The following illustration shows the locations and descriptions of the switches and
jumpers.
Note: If there is a clear protective sticker on the top of the switch block, you must
remove and discard it to access the switch:
The following table describes the jumpers on the system board.
Table 2. System board jumpers
Jumper number
J59
Jumper name
UEFI boot recovery jumper
Jumper setting
v Pins 1 and 2: Normal
(default) Loads the
primary server firmware
ROM page.
v Pins 2 and 3: Loads the
secondary (backup) server
firmware ROM page.
Chapter 2. Introduction
21