Get output up to 50 pages per minute (letter)* with the MS621dn, plus superior print quality, enhanced security and lower energy consumption. 
A 1-GHz dual-core processor and 512 MB of memory maximize performance, while long-life imaging unit, higher toner yields and available extra input trays minimize interruptions. Monitor vital system information and interact securely via a 2.4-inch color LCD. A compact footprint helps it fit in your space and its durable frame is designed for longevity. Finally, innovative font outlining technology makes even the smallest gray text crisp and clear.
Mono laser
Duplex printing: integrated duplex
Printing speed (A4 paper, black): 47 pages printed per minute
Recommended monthly volume: 2,000 - 20,000 pages