Xerox N3225 - Manual (Page 114)

Adding Staples to the Finisher
4-12 ❖ User Guide
4 Slide a new set of staples into the cartridge and pull the
tab to release the packaging.
Make sure the arrows on the package of staples
face up.
5 Slide the full Staple Cartridge into the Finisher until it
snaps into place.
6 Close the access door. Stapling can now continue.