Power Sources
Power Supply
Backup Battery
Power Supply
DC Power Distribution
Cable Configuration
See Removing/Replacing the
Power Supply.
Backup Battery
The 3.0-V lithium battery is installed in the battery socket (B2) on the system board.
It provides power to the NVRAM when the computer is off, enabling the NVRAM to retain the
date, time, and important configuration data. The operating life of the battery is up to
10 years.
See Replacing the System Battery.
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