Switch block
The following illustrates the location and functions of the switch block on the system board.
Important:
• Before you move any switch, 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:
–
http://thinksystem.lenovofiles.com/help/topic/safety_documentation/pdf_files.html
– “Handling static-sensitive devices” on page 85
• If there is a clear protective sticker on the top of the switch block, you must remove and discard it to
access the switches.
• Any system-board switch or jumper block that is not shown in the illustrations in this document is
reserved.
Figure 12. Switch block location on the system board
Table 20. Switch description
Switch number Switch name
Description
1 SW8-1 ME firmware security
override switch
• OFF: The switch is in default setting.
• ON: Enable Flash security override.
2 SW8-2 Clear CMOS switch • OFF: The switch is in default setting.
• ON: Clear the real-time clock (RTC) registry.
48 ThinkSystem SR630 V2 Maintenance Manual
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