HP LaserJet Pro 3003dn Printer. Functions: Print. Print technology: Laser. Print speed: Up to 33 ppm Black (A4, normal); Up to 20 ipm Black (A4, duplex). Print resolution: Up to 1200 x 1200 dpi Black (best); Technology: 600dpi with Resolution Enhancement technology (REt); HP ProRes 1200. Monthly duty cycle: Up to 50,000 A4; Recommended monthly page volume: 350 to 2500 pages. Duplex printing: Automatic (standard). Processor speed: 800 MHz. Standard: Hi-Speed USB device