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