The following illustration shows the status of the jumpers and switches on the system board of your server. You can configure, recover, enable, or disable some specific features of the system board by setting the jumpers or moving the switches.

Figure 31. System board jumpers and switches

Table 1. System jumpers

1

Clear CMOS (Complementary Metal Oxide Semiconductor) jumper

3

Switches

2ThinkServer Management Module Enable/Disable jumper

Attention: To set the jumpers or move switches, you need to remove the server cover to access the system board. Do not open your server or attempt any repair before reading and understanding “Safety information” on page iii and “Guidelines” on page 67.

1

Clear CMOS jumper

Used to clear CMOS and recover your server to the factory default settings.

Note: After clearing CMOS, your BIOS recovers to the factory default settings.

Chapter 3. Product overview 43

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Lenovo RD540 manual Clear Cmos jumper, System board jumpers and switches System jumpers