The Aficio MP C4501/MP C5501 are designed to improve productivity in office environments. Single pass duplex, high-speed color printing at 45/55 pages per minute and a short warm-up time significantly enhance document workflow. Productivity is further improved by an optional envelope feeder and the possibility to print directly from a USB memory stick or SD card. Outstanding eco specs include lowest in-class power consumption to reduce the environmental impact of your office. Advanced security features ensure that these highly reliable multifunctional printers are trusted partners in your office.