Lenovo ThinkServer RD240 (English) Installation and User Guide - Page 29

The following table introduces the jumper switches on the system board.

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Figure 6. Locating other connectors on the system board 1 System fan 1 connector 2 System fan 2 connector 3 System fan 3 connector 4 System fan 4 connector 5 Front USB connector 6 J51 (SGPIO connector for onboard SAS port 1-4) 7 J35 (for front control cable) 8 JP1 (clear CMOS) 9 USB 2 connector 10 J21 (SGPIO connector for onboard SAS port 5-8) 11 JP7 (set onboard SAS) 12 J16 (COM2 connector) The following table introduces the jumper switches on the system board. Table 6. Jumper settings Jumper Position JP1: Clear Pins 1-2 CMOS Pins 2-3 JP7: Set Onboard SAS Pins 1-2 Pins 2-3 Description The default position at which the jumper is placed on pins 1-2 during the normal operation of the system. If the jumper is placed on pins 2-3, when the jumper is moved back to the default position, the settings of CMOS will be cleared automatically at the next startup. The default position at which the jumper is placed on pins 1-2 during the normal operation of the system. The onboard SAS controller is enabled. If the jumper is placed on pins 2-3, the onboard SAS controller is disabled. Note: Before clearing the CMOS, turn off the server and disconnect the power cord. Move the jumper from pins 1-2 to pins 2-3. Wait more than five minutes and then move the jumper back to the normal position (pins 1-2) to clear CMOS. Chapter 4. Locating parts, controls, LEDs, and connectors 17

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Figure 6. Locating other connectors on the system board
1
System fan 1 connector
7
J35 (for front control cable)
2
System fan 2 connector
8
JP1 (clear CMOS)
3
System fan 3 connector
9
USB 2 connector
4
System fan 4 connector
10
J21 (SGPIO connector for onboard SAS port 5-8)
5
Front USB connector
11
JP7 (set onboard SAS)
6
J51 (SGPIO connector for onboard
SAS port 1-4)
12
J16 (COM2 connector)
The following table introduces the jumper switches on the system board.
Table 6. Jumper settings
Jumper
Position
Description
Pins 1-2
The default position at which the jumper is placed on pins 1-2 during the normal
operation of the system.
JP1: Clear
CMOS
Pins 2-3
If the jumper is placed on pins 2-3, when the jumper is moved back to the default
position, the settings of CMOS will be cleared automatically at the next startup.
Pins 1-2
The default position at which the jumper is placed on pins 1-2 during the normal
operation of the system. The onboard SAS controller is enabled.
JP7:
Set
Onboard
SAS
Pins 2-3
If the jumper is placed on pins 2-3, the onboard SAS controller is disabled.
Note:
Before clearing the CMOS, turn off the server and disconnect the power cord. Move the jumper from
pins 1-2 to pins 2-3. Wait more than five minutes and then move the jumper back to the normal position
(pins 1-2) to clear CMOS.
Chapter 4
.
Locating parts, controls, LEDs, and connectors
17