System-Board Internal Connectors And Switches - IBM 7977E7U User Manual

System-board internal connectors and switches

The following illustrations show the internal connectors and switches on the system
board.
See Table 2 for information about the switch settings.
14
IBM System x3500 Type 7977: User's Guide
Wake on LAN
(CN 45)
Table 2. Switches on SW4
Switch number
1
SW4 (Boot block/Clear CMOS)
Description
Boot block:
v Leave the switch in the off position for normal mode.
v Move the switch to the on position to enable the system
to recover if the BIOS code becomes damaged.