HP ProOne 400 G1 Maintenance & Service Manual page 79

4.
Remove the system board shield (see
The battery can now be seen on the left side of the memory modules.
5. To release the battery from its holder, insert a thin metal instrument into the slot on the side of the
holder below the battery (1) and pry the battery up and out of the holder (2).
6.
To insert the new battery, slide one edge of the replacement battery under the holder's lip with the
positive side up (1) and press the other edge down into the holder so that it snaps in place (2).
7.
Reassemble the computer.
8. Reset the date and time, your passwords, and any special system setups using Computer Setup.
System board shield on page 62).
Battery
69