System-board switches

The following illustrations show the location of the switches, jumpers, and buttons on the server.

Note

If there is a clear protective sticker on the top of the switch blocks, you must remove and discard it to access the switches.

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 switch or jumper block that is not shown in the illustrations in this document are reserved.

Figure 1. System-board switches (System board bottom side)

The following table describes the functions of the switches on the bottom side of the system board.

Table 1. System-board switches
Switches block	Switch number	Switch name	Usage description
Switches block	Switch number	Switch name	On	Off
`1` SW1	1	XClarity Controller boot backup	The node boots by using a backup of the XCC firmware	Normal (default)
	2	CMOS clear	Clears the real-time clock (RTC) registry	Normal (default)
	3	Password override	Overrides the power-on password	Normal (default)
	4	(Reserved)	(Reserved)	Normal (default)
	5	Serial function selection	Accesses XCC via the serial console connector	Normal (default)
	6	Machine Engine (ME) recovery override	ME boots to recovery	Normal (default)
	7	(Reserved)	(Reserved)	Normal (default)
	8	(Reserved)	(Reserved)	Normal (default)
`2` SW2	1	Machine Engine (ME) firmware security override	Enables ME update mode	Normal (default)
	2	XCC force update	Enables XCC force update	Normal (default)
	3	FPGA power permission override	Ignores Power Permission and allows system to power-on	Normal (default)
	4	Force XCC reset	Forces XCC to reset	Normal (default)
	5	Force XCC CPU reset	Forces XCC and CPU to reset	Normal (default)
	6	Force DnX reload	Enter DnX mode	Normal (default)
	7	Force FPGA reset	Forces FPGA to reset	Normal (default)
	8	(Reserved)	(Reserved)	Normal (default)

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