HP LaserJet Enterprise 600 Printer M603 series - Manual (Page 175)

8. Press the DIMM straight into the slot, and press firmly. Make sure the locks on each side of the
DIMM snap into place.
9. Close the access door, and press firmly until it snaps into place.
10. Reinstall the right-side panel. Align the tabs on the panel with the slots in the product, and push the
panel toward the front of the product until it latches into place.
ENWW Install memory and internal USB devices 159