System-board-assembly switch

This section provides information about locations and functions of the switch block on the system board assembly that 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:

   • Safety Information page

   • Installation Guidelines

   • Handling static-sensitive devices

   • Power off the server

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

Figure 1. Switch block on the system board assembly

Table 1. Switch block on the system board assembly

Switch number	Switch name	Default position	Description
SW5-1	Force BMC CPU reset	Off	Forces BMC and CPU into reset when changing it to the ON position.
SW5-2	Clear CMOS	Off	Clears the real-time clock (RTC) registry when changing it to the ON position.
SW5-3	Override power-on password	Off	Overrides the power-on password when changing it to the ON position..
SW5-4	FPGA reset	Off	Forces FPGA into reset when changing it to the ON position.
SW5-5	N/A	N/A	N/A
SW5-6	MFG mode	Off	Enables MFG mode of firmware (UEFI/XCC/FPGA) when changing it to the ON position.
SW5-7	At-Scale debug	Off	Enables BMC At-Scale debug when changing it to the ON position.
SW5-8	Low security	Off	Allows transitioning between signed official XCC builds and XCC test signed builds, and bypasses CRTM boot check of XCC firmware when changing it to the ON position.