IBM System x3550 M3 Type 4254

Table 6. System board jumpers
Jumper number Jumper name Jumper setting
J29 UEFI boot recovery jumper
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.
J147 IMM recovery jumper
v Pins 1 and 2: Normal
(default) Loads the
primary IMM firmware
ROM page.
v Pins 2 and 3: Loads the
secondary (backup) IMM
firmware ROM page.
SW4 switch block
SW3 switch block
uEFI boot recovery
jumper (J29)
IMM recovery
jumper (J147)
Figure 17. System-board switches and jumpers
Chapter 2. Installing optional devices 39