System-board switches

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

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.

Figure 1. Switches on compute node system board

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 following information:

   • Safety Information page

   • Installation Guidelines

   • Handling static-sensitive devices

   • Power off the solution

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

Table 1. System-board switches

1 SW5 switch block

2 SW13 switch block

Table 2. SW5 switch block definition

Switch number	Switch name	Usage description
		On	Off
3	Machine Engine (ME) firmware security override	ME update by jumper	Normal (default)
4	Password override	Overrides the power-on password	Normal (default)
5	Low security	Enable low security	Normal (default)

Table 3. SW13 switch block definition

Switch number	Switch name	Usage description
		On	Off
3	Clear CMOS	Clear CMOS data	Normal (default)
5	Serial select	Sends the XCC to the serial port	Send the serial input output (SIO) to the front serial port (default)