Dell POWEREDGE 840 - Manual (Page 117)

Jumpers and Connectors
117
Table 6-1. System Board Jumper Settings
Jumper Setting Description
PASSWD_EN (default) The password feature is enabled.
The password feature is disabled.
NVRAM_CLR The configuration settings in NVRAM are cleared at next
system boot.
(default) The configuration settings in NVRAM are retained at system
boot.
jumpered unjumpered