HP LaserJet Enterprise MFP M631z, Print, Copy, Scan, Fax. Print technology: Laser, Printing: Mono printing, Maximum resolution: 1200 x 1200 DPI. Copying: Mono copying, Maximum copy resolution: 600 x 600 DPI. Scanning: Colour scanning, Optical scanning resolution: 600 x 600 DPI. Maximum ISO A-series paper size: A4. Wi-Fi. Product colour: Black, White