HP Color LaserJet 4550DN provides exceptional color print quality with no performance (speed) trade-offs, backed by HP's unparalleled reputation for quality, reliability, and compatibility. This printer is ideal for all your workgroup color printing needs.??It features 600-dpi engine with HP Image Resolution Enhancement technology (HP ImageREt 2400) that provides 2400 dpi class color laser print quality. Automatic color calibration ensures consistent, high-quality color over the life of the printer. Expanded Control Panel messages identify potential issues and recommend solutions. This printer offers the leading cost per page and allows you to print out great-looking professional color documents really fast: 4 ppm for full color, 16 ppm for black and white.