Specifications Print speed black (ISO)Up to 18 ppmPrint speed black (draft, A4)Up to 29 ppmPrint speed color (ISO)Up to 10 ppmPrint speed colour (draft, A4)Up to 24 ppmPrint speed footnoteAfter first page; see http://www.hp.com/go/inkjetprinter for details. Print speed may vary depending on the type of output.Print quality black (best)Up to 600 x 1200 dpiPrint quality color (best)Up to 600 x 1200 dpiDisplayButton and LED control panelConnectivity, standard1 USB 2.0; 1 Ethernet; 1 Wireless 802.11b/g/nCompatible operating systemsWindows 8.1 (32-bit and 64-bit), Windows 8 (32-bit and 64-bit), Windows 7 (32-bit and 64-bit), Windows Vista (32-bit and 64-bit) , Windows XP (32-bit) (Professional and Home Editions); Mac OS X v 10.6, v 10.7, v 10.8 or v 10.9; Linux (For more information, see http://hplipopensource.com/hplip-web/index.html).WarrantyOne-year limited hardware warranty; 24-hour, 7 days a week phone support