HP 251dw Officejet Pro Printer: Key Features: * Print Speed Black: Up to 25 ppm; Color: Up to 25 ppm * Print Resolution Black: Up to 1200 x 1200 dpi, Color: Up to 1200 x 1200 dpi * Built-in Wireless * Energy Star certified * Replacement Ink 950, 950XL Black Officejet Ink Cartridges; 951, 951XL Yellow, Magenta, Cyan Color Officejet Ink Cartridges Additional Specifications: * Built-in Wireless LAN (802.11b/g/n) Print from multiple computers * Paper and Media Compatibility: 250-sheet input tray, 150-sheet output tray Media Types: Plain paper; Thick plain paper; HP Bright White Paper; HP Premium Presentation Paper, Matte; HP Premium Plus Photo Papers; Other inkjet papers (up to 28 lb bond); HP Advanced Photo Papers; HP Everyday Photo Paper, Matte; HP Everyday Photo Paper, Glossy; Other photo papers (up to 75 lb bond); Other Greeting Cards (up to 110 lb index); HP Brochure Paper 180g, Glossy; HP Brochure and Flyer Paper, Matte; HP Tri-fold Brochure Paper, Matte; HP Tri-fold Brochure Paper, Glossy; Other brochure papers; Plain Hagaki; Inkjet Hagaki; Photo Hagaki; Card Stock System Requirements: * Compatible Operating Systems: Windows XP/Vista/7/8, Mac OS X 10.6/Lion/Mountain Lion What"s Included: * Quick Reference * User"s Guide * Installation CD-ROMs * Power supply * Power cord * USB cable not included. To shop for a USB printer cable, click here. ENERGY STAR® Products that are ENERGY STAR-qualified prevent greenhouse gas emissions by meeting strict energy efficiency guidelines set by the U.S. Environmental Protection Agency and the U.S. Department of Energy. The ENERGY STAR name and marks are registered marks owned by the U.S. government, as part of their energy efficiency and environmental activities.