HP Colour LaserJet Enterprise M552dn Printer (B5L23A) - Print Size: A4, Functions: Print Only, Print Speed: Up to 33 ppm, Print Resolution: Up to 1200 x 1200 dpi, HP ImageREt 3600 (best), Duplex Printing: Automatic (standard), Memory: 1 GB RAM + 4GB RAM non-volatile storage, Connectivity: Hi-Speed USB 2.0 port, Built-in Fast Ethernet 10/100/1000Base-TX network port, Paper Handling: 550 Sheet Input Tray, 100 Sheet Multipurpose Tray, Display: 4-line LCD with keypad, Mobile printing capability: HP ePrint&Apple AirPrint