System-board switches

The following illustration shows the location and description of the switches.

Important

1. If there is a clear protective sticker on the switch blocks, you must remove and discard it to access the switches.
2. Any system-board switch or jumper block that is not shown in the illustrations in this document are reserved.

Figure 1. Location of the switches on the system board

The following table describes the switches on the system board:

Table 1. Switch definition

Switch block	Switch	Switch name	Usage description
			Open	Close
1 SW2	4	Password override jumper	Overrides the power-on password	Normal (default)
	7	Lenovo XClarity Controller force update	Enables Lenovo XClarity Controller force update	Normal (default)
2 SW3	3	CMOS clear jumper	Clears the real-time clock (RTC) registry	Normal (default)

Important

1. Before you change any switch settings or move any jumpers, turn off the solution. Then, disconnect all power cords and external cables. Review the information in Safety Information page, Installation Guidelines, and Power off the compute node.
2. Any system-board switches or jumper blocks that are not shown in the illustrations in this document are reserved.