HP (Hewlett Packard) color laserjet enterprise CM4540fskm (CC421A) is a multifunction printer/copier/fax/scanner all-in-one machine for your office color printing needs. This network-ready HP color laserjet CM4540fskm prints up to 40 ppm (mono), 40 ppm (color) with resolution 600 x 600 dpi. Color laserjet CM4540fskm features 600 sheet capacity standard input tray. Color Laserjet CM4540fskm printer uses HP (Hewlett Packard) 646X/ 647A Black and three 646A Color (Cyan, Yellow, Magenta) cartridges. Cartridge model numbers are CE264X, CE260A, CF031A, CF032A, CF033A.