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System-board jumpers and buttons

The following illustrations show the location of the 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.
Figure 1. System-board jumpers and buttons
System-board jumpers and buttons
Table 1. System-board jumpers and buttons
Jumper and button nameJumper setting / button function
1 Force XCC update jumper

  • Pins 1 and 2: Default

  • Pins 2 and 3: Force the Lenovo XClarity Controller to update to the latest version

2 NMI button

Press this button to force a nonmaskable interrupt (NMI) to the processor. By this way, you can set the server into blue screen mode and take a memory dump.

3 NCSI function

  • Pins 1 and 2: Default

  • Pins 2 and 3: Disable

4 Power permission override jumper

  • Pins 1 and 2: Default

  • Pins 2 and 3: Override the power-on permission

5 Clear CMOS jumper

  • Pins 1 and 2: Default

  • Pins 2 and 3: Clear the real-time clock (RTC) registry

6 TPM card physical presence jumper

  • Pins 1 and 2: Default

  • Pins 2 and 3: TPM card physical presence is asserted

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 information in Safety Information page, Installation Guidelines, Handling static-sensitive devices, and Power off the server.
  2. Any system-board switch or jumper block that is not shown in the illustrations in this document are reserved.