Lenovo 6523 User Manual download pdf (Page 37)

3 Ethernet connector 1 7 SW1 (NMI button)

4 USB connectors 1 and 2

System-board switches and jumpers

The following illustration shows the switches and jumpers on the system board.

Microprocessor

Heatsink

Orientation

DIMMs

The following table describes the jumpers on the system board.

Table 3. System board jumpers

Jumper number Jumper name Jumper setting

JP1 Clear CMOS jumper 1

v Pins 1 and 2: Keep CMOS

data (default).

v Pins 2 and 3: Clear CMOS

data (including power-on

password and

administrator password)

JP6 Boot block jumper 2

v Pins 1 and 2: Boot from

primary BIOS page

(default) .

v Pins 2 and 3: Boot from

backup BIOS page.

Notes:

1. If no jumper is present, the server responds as if the pins are set to 1 and 2.

2. Changing the position of the UEFI boot recovery jumper from pins 1 and 2 to pins 2 and

3 before the server is turned on alters which flash ROM page is loaded. Do not change

the jumper pin position after the server is turned on. This can cause an unpredictable

problem.

Chapter 4. Server controls, LEDs, and power 21

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 215 216

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Lenovo 6523 User Manual Page 37