HP LaserJet Enterprise M4555 MFP series - Manual (Page 30)

9 Right door latch
10 Tray 2
11 Tray 3
12 Lower right door latch
13 Tray 4
14 Tray 5
15 Stapler door (access to the staple cartridge)
Back view
3
2
1
1 Interface ports (formatter)
2 Power connection
3 Power switch
10 Chapter 1 Product basics ENWW