System-board jumpers and buttons
The following illustrations show the location of the jumpers and buttons on the server.
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
The following table describes the jumpers and buttons on the system board.
|Jumper and button name||Jumper setting / Button function|
|1 Force XCC update jumper|
|2 Force NMI button||This button is on the rear of the server. Press this button to force a nonmaskable interrupt to the processor. You might have to use a pen or the end of a straightened paper clip to press the button. You can also use it to force a blue-screen memory dump (use this button only when you are directed to do so by Lenovo Support).|
|3 NCSI functional header jumper|
|4 Power permission override jumper|
|5 Clear CMOS jumper|
|6 TPM/TPM card physical presence jumper|
- 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.
- Any system-board switch or jumper block that is not shown in the illustrations in this document are reserved.