HP LaserJet Enterprise MFP M577 series

14 Easy-access USB port (on the side of the control panel)
Insert a USB ash drive for printing or scanning without a computer or to update the printer rmware.
NOTE: An administrator must enable this port before use.
15 Hardware integration pocket (for connecting accessory and third-party devices)
Printer back view
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1 Toner-collection-unit door
2 Formatter (contains the interface ports)
3 Power connection
4 Serial number and product number label
5 Slot for a cable-type security lock (on the rear cover of the printer)
6 Formatter cover
ENWW Printer views 3