Samsung Network-Ready Workgroup Color Laser Printer, Laser, Colour, 600 x 600 DPI, A4, 21 ppm Samsung Network-Ready Workgroup Color Laser Printer. Print technology: Laser, Colour. Number of print cartridges: 4. Maximum resolution: 600 x 600 DPI. Maximum ISO A-series paper size: A4. Print speed (black, normal quality, A4/US Letter): 21 ppm