Table 4. Callout descriptions
Jumper name Jumper setting
1 UEFI boot recovery
jumper (J29)
v Pins 1 and 2: Normal (default) Loads the primary server
firmware (formerly called BIOS) ROM page.
v Pins 2 and 3: Loads the secondary (backup) server firmware
ROM page.
2 IMM recovery
jumper (J147)
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.
3 SW4 switch block
(reserved)
4 SW3 switch block
26 ThinkServer RD220 Types 3729, 3779, 3797, and 3798: Installation and User Guide