HP Integrity rx4640 Server - Manual (Page 20)

Upgrading or replacing controller options 20
b. Lift the battery pack off the cache board (2).
4. Remove the secondary cache battery pack:
a. Unhook the wire retainer that holds the battery pack to the controller board (1).
b. While holding the battery in one hand, pull the plastic retainer tabs up and push them through to
the other side of the controller board (2).
5. Replace whichever battery is degraded.
6. Reinstall the batteries on the cache board and the controller board.
7. Reinstall the cache board and its battery on the controller.
Replacing the expansion module
To install the expansion module:
1. Insert the VHDCI connector into the empty slot on the controller bracket (1), sliding the expansion
module under the bracket lip (2).