Technology : Laser Type : Print, Scan, Copy, Fax Max Printing Resolution (B/W) : 600 x 600 dpi (Optical) / Up to 1,200 x 1,200 dpi effective output (Enhanced) Max Printing Speed (B/W) : Up to Up to 40 ppm in A4 (siplex), Up to 20 ipm in A4 (duplex) Max Copying Resolution (mono): 600 x 600 dpi Max Copying Speed (mono) : Up to 40 cpm in A4 Maximum Copies : N/A Automatic Duplexing : Built-in Media Sizes : A4 / A5 / A6 / Letter / Legal / Oficio / Folio/ JIS B5 / ISO B5 / Executive / Statement/ Postcard 4 x 6 / Envelope Monarch /Envelope No 9 / Envelope No 10 / Envelope DL / Envelope C5 / Envelope C6 / Custom Total Media Capacity : N/A Interface : High-speed USB 2.0 Device / Host, Ethernet 10 / 100 / 1,000 BASE TX Monthly Duty Cycle (max) : 120,000 Images RAM (Max Supported) : N/A Hard Drisk Drive : N/A