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System board jumpers

The following illustration shows the location of the jumpers on the server.

Figure 1. System board jumpers
System board jumpers

Table 1. Jumper description
Jumper nameJumper numberJumper setting
1 Force XCC update jumperJP16
  • Pins 1 and 2: The jumper is in default setting.
  • Pins 2 and 3: Force the Lenovo XClarity Controller to update to the latest version.
2 Force XCC reset jumperJP19
  • Pins 1 and 2: The jumper is in default setting.
  • Pins 2 and 3: Reset the Lenovo XClarity Controller.
3 TPM/TCM physical presence jumperJP23
  • Pins 1 and 2: The jumper is in default setting.
  • Pins 2 and 3: TPM/TCM physical presence is asserted.
4 Power permissionJP72

  • Pins 1 and 2: The jumper is in default setting.

  • Pins 2 and 3: Enable Power On.

5 Boot backup XClarity ControllerJP71

  • Pins 1 and 2: The jumper is in default setting.

  • Pins 2 and 3: The tower server will boot by using a backup of the XClarity Controller firmware.

6 Clear CMOS jumperJP76
  • Pins 1 and 2: The jumper is in default setting.
  • Pins 2 and 3: Clear the real-time clock (RTC) registry.
7 ME recoveryJP59

  • The jumper is in default setting.

  • ME boots to recovery.

8 ME firmware security overrideJP38

  • Pins 1 and 2: The jumper is in default setting.

  • Pins 2 and 3: Enable Flash security override.

9 Override power-on password jumperJP61
  • Pins 1 and 2: The jumper is in default setting.
  • Pins 2 and 3: Override the power-on password.
Important
  • Before you move the jumpers, turn off the server. Then, disconnect all power cords and external cables. Do not open your server or attempt any repair before reading and understanding the following information:
  • Any system-board switch or jumper block that is not shown in the illustrations in this document are reserved.