HP ML530 ProLiant ML530 Generation 2 Server Setup and Installation Guide - Page 255

System LEDs and Switches System Maintenance Switch The system maintenance switch (SW4) is an 8-position switch that is used for system configuration. The default setting for all eight positions is off. For the proper system maintenance switch settings, refer to the labels attached to the inside of the server access panel or see the following table. Table C-14: System Maintenance Switch (SW4) Position Description On/Off Function 1 Reserved 2 Lock configuration information Off = System configuration can be changed. On = System configuration is locked and cannot be modified. 3 Tower/rack model select Off = System is in a tower configuration. On = System is in a rack configuration. 4 Enable diskette boot Off = Booting from diskette is controlled by RBSU. On = Booting from diskette is enabled and RBSU setting is overridden. 5 Clear system passwords Off = System passwords work normally. On = System passwords will be erased. 6 Invalidate NVRAM and CMOS Off = No function is available. On = ROM treats system configuration as invalid. 7 Reserved 8 Reserved Note: To access redundant ROM, set system maintenance switches 1, 5, and 6 to the "on" position. See "Redundant ROM Support" in Chapter 8, "Server Configuration and Utilities" for more information. HP ProLiant ML530 Generation 2 Server Setup and Installation Guide C-21