HP LaserJet 4345 Multifunction Printer series - Manual (Page 144)

2. Open the staple-cartridge cover.
3. Grasp the green staple-cartridge handle and pull the old staple cartridge out of the
stapler unit.
4. Insert the new staple cartridge into the stapler unit and push down on the green handle
until the unit snaps into place.
5. Close the staple-cartridge cover, and slide the stapler/stacker into the MFP.
130 Chapter 7 Optional output and input devices ENWW