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
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:
- 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


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. |