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System board switches and jumpers

The following illustration shows the location of the switches and jumpers 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 switches and jumpers
System-board switches and jumpers

Table 1. Jumpers and switches on the system board
Jumper/Switch nameJumper/Switch numberJumper/Switch setting
1 TPM/TCM physical presence jumperJP6

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

  • Pins 2 and 3: TPM/TCM physical presence is asserted.

2 Clear CMOS jumperJP3

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

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

3 ME firmware security overrideJP8

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

  • Pins 2 and 3: Enable Flash security override.

Note
For debug only.
4 SW6 switch blockSW6(including switches 1, 2, 3, 4, 5, 6, 7, and 8)
All the switches are in the Off position by default.

  • Switches 1, 6, and 8: Reserved.

  • Switch 2: Override power-on password switch. Changing position of this switch overrides the power-on password.

    Changing position of this switch does not affect the administrator password.

4 Power permissionSW6 (switch 7)The default position is Off. Changing this switch to the On position enables Power On.
4 Force XCC resetSW6 (switch 4)The default position is Off. Changing this switch to the On position resets the Lenovo XClarity Controller.
4 Force XCC updateSW6 (switch 3)The default position is Off. Changing this switch to the On position forces the Lenovo XClarity Controller to update to the latest version.
Important
  • Before you move the switches and 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.