HP Color LaserJet Enterprise M681dh. Print technology: Laser Printing: Colour printing Maximum resolution: 1200 x 1200 DPI Print speed (colour normal quality A4/US Letter): 47 ppm. Copying: Colour 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. Direct printing. Product colour: Black Grey