Technology : Laser Max Resolution: Black (best): Up to 1200 x 1200 dpi Print Speed : Up to 42 ppm black (letter) Automatic Duplexing : Automatic (standard) Media Sizes : A4, A5, A6, RA4, B5 (JIS), B6 (JIS), 10x15 cm, 16K, Postcard (JIS), DPostcard (JIS), Envelope (B5, C5, C6, DL) Total Media Capacity : Up to 250 sheet Interface : USB, LAN Monthly Duty Cycle (max) : Up to 75,000 pages A4 RAM: 1 GB