HP LaserJet 5200 Printer series - Manual (Page 216)

7. Press the DIMM straight into the slot, and press firmly. Make sure the locks on each side of the
DIMM snap into place.
NOTE To remove a DIMM, first release the locks.
8. Close the access door, and press firmly until it snaps into place.
202 Appendix E Working with memory and print server cards ENWW