HP LaserJet Enterprise M4555 MFP series - Manual (Page 130)

7. Pull on the orange tab to remove the toner
sealing tape. Completely remove the sealing
tape from the cartridge.
CAUTION: Avoid prolonged exposure to
light.
8. Align the print cartridge with its slot and insert
the print cartridge until it clicks into place.
9. Close the top cover.
110 Chapter 7 Manage supplies ENWW