Brother HL-5170DNLT Network Monochrome Laser Printer Up to 21 ppm print speed; 2,400 x 600 dpi maximum print resolution 32 MB standard memory, expandable to 128 MB 550-sheet standard input capacity; duplexing standard 10/100 BaseT Ethernet, parallel, and USB 2.0 interfaces Optional wireless networking; Windows, Mac, Linux compatible