Product Detail Prints up to 32ppm monochrome output 550-sheet standard paper capacity, expandable Built-in Wireless (802.11b/g) and Ethernet network interfaces Automatic duplex printing for two-sided documents Up to 1200 x 1200 dpi resolution . The "Brother HL-5370DWT Laser Printer with Wireless Networking, Duplex and Dual Paper Trays" is best product for you. We recommended Brother HL-5370DWT Laser Printer with Wireless Networking, Duplex and Dual Paper Trays