Monochrome Printer Laser, Duplex, Print Speed Mono: 40 ppm, First-page-out time: 7.2 seconds, Print Resolution: 1200 x 1200 dpi, Memory: 256 mb, Interface: Hi Speed USB 2.0, 10 Base-T/100 Base-TX/1000 Base-T, Wireless, Paper Weight: 60 gsm - 120 gsm