Power Sources: Dell� OptiPlex� 4xxLe (4XXDL)
Power Sources: OptiPlex 4xxLe
(4XXDL)
Power Supply | System Battery
Removing/Replacing
the Power Supply
Power-Supply Cable Configuration
DC Power Distribution
The power supply-on signal is an active-low signal that turns
on (and off) all power supply outputs except the +5 VSP (volts
standby power). The +5 VSP is on anytime the power supply is
connected to an AC power source.
The system battery is a
3.0-V lithium backup battery, which is located on the system
board in the battery socket (B2). This battery provides power to
the nonvolatile random-access memory (NVRAM) when the computer is
off, enabling the NVRAM to retain the date, time, and important
system configuration information.
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