System-board switches

Use this information to locate and understand the system-board switches in the blade server.

The following illustration shows the location of the switch block and the IMM backup jumper on the system board.


Graphic illustrating system-board switches

The following table describes the function of the switches in the switch block (SW2).

Switch number Description Switch setting Definition
SW2 - 1 Reserved    
SW2 - 2 Force power on The default position is off. Turning this switch to the on position forces the blade server to power on
SW2 - 3 Trusted Platform Module (TPM) physical presence The default position is off. Turning this switch to the on position indicates a physical presence to the TPM.
SW2 - 4 Password override switch The default position is off. Turn this switch to the on position overrides the power on password.
SW2 - 5 Real time clock (RTC) reset The default position is off. Turning this switch to the on position resets the RTC. A momentary toggle is all that is required. To avoid excessive battery drain, do not leave this switch on.
SW2 - 6 Reserved    
SW2 - 7 Flash bank select The default position is off. Turning this switch to the on position forces the blade to boot from the backup UEFI image.
SW2 - 8 Wake on LAN (WOL) disable The default position is off. Turning this switch to the on position disables WOL.
SW2 - 9 Force H8 update The default position is off. N/A
SW2-10 Reserved