HP (Hewlett Packard) LaserJet Pro 400 Color M451dn (CE957A) is a affordable, fast-printing color laserjet machine for your home or office color printing needs. M451dn prints up to 21 ppm at the maximum resolution of 600 x 600 dpi and supports duplex 2-sided printing. Laserjet Pro M451dn comes with 300 sheets standard input capacity and 150 sheet capacity output tray. M451dn supports Hi-Speed USB and ethernet connections. Using HP ePrint, M451dn allows you to print from anywhere using both computers and handheld devices. HP LaserJet Pro M451dn uses HP (Hewlett Packard) 305A Black, 305X High Yield Black and three 305A Color (Cyan, Yellow, Magenta) cartridges. Cartridge model numbers are CE410A, CE410X, CE411A, CE412A, CE413A.