HP LaserJet M9059 Multifunction Printer series - Manual (Page 118)

6. Insert the new staple cartridge so that it locks into place.
Figure 7-11 Load staples in the multifunction finisher (6 of 8)
7. Slide the stapler unit into the finisher.
Figure 7-12 Load staples in the multifunction finisher (7 of 8)
8. Close the stapler unit door and realign the multifunction finisher against the MFP.
Figure 7-13 Load staples in the multifunction finisher (8 of 8)
104 Chapter 7 Print tasks ENWW