Lenovo 6437, 6438, 6436, 6435 manual System-board switches and jumpers, Component, Settings

Important: Use only a supported SAS/SATA controller in the SAS/SATA controller card connector. For a list of supported optional devices for the server, see http://www.lenovo.com/thinkserver.

System-board switches and jumpers

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

1 Boot block recovery jumper
2 Clear CMOS jumper

The following illustration identifies the pins on a jumper and shows the location of pin 1.

	3
	2
Pin 1 mark	1

Table 2. Switch and jumper settings

Component	Settings
Clear CMOS jumper (JP3)	v Pins 1 and 2: Keep CMOS data (default)
	v Pins 2 and 3: Clear the CMOS data, which clears the
	power-on password and administrator password
Boot block jumper (JP4)	v Pins 1 and 2: Normal (default)
	v Pins 2 and 3: Boot from boot block

Chapter 2. Installing optional devices 15