System board jumpers

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

Figure 1. System board jumpers

Table 1. Jumper description

Jumper name	Jumper number	Jumper setting
1 Force XCC update jumper	JP16	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 jumper	JP19	Pins 1 and 2: The jumper is in default setting. Pins 2 and 3: Reset the Lenovo XClarity Controller.
3 TPM/TCM physical presence jumper	JP23	Pins 1 and 2: The jumper is in default setting. Pins 2 and 3: TPM/TCM physical presence is asserted.
4 Power permission	JP72	Pins 1 and 2: The jumper is in default setting. Pins 2 and 3: Enable Power On.
5 Boot backup XClarity Controller	JP71	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 jumper	JP76	Pins 1 and 2: The jumper is in default setting. Pins 2 and 3: Clear the real-time clock (RTC) registry.
7 ME recovery	JP59	The jumper is in default setting. ME boots to recovery.
8 ME firmware security override	JP38	Pins 1 and 2: The jumper is in default setting. Pins 2 and 3: Enable Flash security override.
9 Override power-on password jumper	JP61	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:

  • Safety Information page

  • Handling static-sensitive devices

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