Samsung Xpress M2820DW Wireless Mono Laser Printer with two-sided printing Fast. Save time by printing even complex documents at speeds of up to 28 pages per minute (PPM) Network Ready; Hi-Speed USB 2.0, Ethernet 10/100 Base Tx, Wireless 802.11 b/g/n.Automatic Duplexing (two-sided printing) Mobile printing by using mobile device.High-resolution printing - quality up to 4800 x 600 dpi effective With Easy Eco Driver, you can make savings of up to 20% on toner and paper as well as reducing your energy usage.