HP Integrity rx4640 Server - Manual (Page 21)

Upgrading or replacing controller options 21
2. Press firmly on the back of the expansion module to seat the expansion module connector securely in
the socket on the controller board (3).
3. Secure the expansion module to the controller board by inserting and tightening the appropriate
screw (provided in the kit) in the back of the controller board (4).
To remove the expansion module, reverse this procedure.