Dell PowerEdge R710 Series Hardware Owner's Manual page 178

Figure 6-1. System Board Jumpers
Jumper
PWRD_EN
NVRAM_CLR
178
Jumpers and Connectors
Setting
Pins 2 and 4
(default)
Pins 4 and 6 The password feature is disabled and
Pins 3 and 5
(default)
Description
The password feature is enabled.
iDRAC6 local access is unlocked at the next
AC power cycle.
The configuration settings are retained at
system boot.