HP Color LaserJet Enterprise M553n Printer (B5L24A) - Print Size: A4, Functions: Print only, Print Speed: Up to 38 ppm, Print Resolution: 1200 x 1200 dpi, HP ImageREt 3600 (best), Duplex Printing: Manual, Memory: 1 GB RAM + 4GB RAM non-volatile storage, Connectivity: 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, Mopria-certified