Technology : Laser Max Resolution: 1,200 x 1,200 dpi Print Speed : 45 A4 pages/min Automatic Duplexing : Yes Media Sizes : N/A Total Media Capacity : 500 sheet A4 Interface : USB 2.0, 10/100/1000BaseTX, USB host (2),SD slot Monthly Duty Cycle (max) : N/A RAM: Standard: 512 MB / Maximum: 2000 MB