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System-board-assembly switches

The following illustrates locations and functions of the switch block on the on the system board assembly which contains the system I/O board and processor board.

Important
  1. Before you change any switch settings or move any jumpers, turn off the server; then, disconnect all power cords and external cables. Review the following information:

  2. Any system-board switch or jumper block that is not shown in the illustrations in this document are reserved.
Figure 1. System-board-assembly switch blocks
System-board-switch blocks

1 SW2

2 SW6

SW2 switch block

Table 1. SW2 switch block
Switch blockSwitch numberSwitch nameDefault positionDescription

Switch block SW2
SW2-1FPGA resetOFFForces FPGA into reset when changing it to the ON position.
SW2-2Force BMC CPU resetOFFForces BMC and CPU into reset when changing it to the ON position.
SW2-3BIOS advance functionOFFEnables BIOS advance function when changing it to the ON position.
SW2-4BIOS image swapOFFEnables BIOS image swap when changing it to the ON position.

SW6 switch block

Table 2. SW6 switch block
Switch blockSwitch numberSwitch nameDefault positionDescription

Switch block SW6
SW6-1ME security overrideOFFDisables ME Security checks when changing it to the ON position.
SW6-2Clear CMOSOFFClears the real-time clock (RTC) registry when changing it to the ON position.
SW6-3Password overrideOFFOverrides the power-on password when changing it to the ON position.
SW6-4ME recoveryOFFBoots ME into recovery mode when changing it to the ON position.
SW6-5BIOS recoveryOFFBoots BIOS into recovery mode when changing it to the ON position.
SW6-6MFG modeOFFEnables MFG mode of firmware (UEFI/XCC/FPGA) when changing it to the ON position.
SW6-7At-Scale debugOFFEnables BMC At-Scale debug when changing it to the ON position.
SW6-8Low securityOFFKeeping it ON allows transitioning between signed official XCC builds and XCC test signed builds, and bypasses CRTM boot check of XCC firmware.