HP LaserJet Pro MFP 3103fdn Mono Laser Multifunction 4-In-One Printer USB , Network , Duplex & Auto Feeder - White: Specification Mono Print Speed(ISO, Letter) up to 35 ppm(ISO, A4) up to 33 ppmBlack (standard, A4): up to 33 pages per minute; Black (standard, letter): up to 35 pages/minute; Black (duplex, A4): up to 20 ipm; Black (two-sided printing, letter): up to 21 ipmDuplex printing speed (A4): up to