Engineered for Business. Ideal for the busy home office, the Workforce 645 is the hassle-free all-in-one that brings you the World’s Fastest one- and two-sided print speeds in its class, plus automatic two-sided printing/copying/scanning. It boasts a 250-sheet paper tray, and you can save on ink with available Extra High-capacity ink cartridges – up to 40% less printing costs than color lasers. You can even save time with the Workforce 645 with speeds of 15 ISO ppm (black) and 7.2 ISO ppm (color). Use the 30-page ADF to quickly copy, scan or fax stacks of two-sided originals. Easily share your all-in-one with built-in wired and wireless networking. Or, use Epson Connect to print from popular mobile devices. This powerful product is built to keep your business running at full speed.Compatible Operating Systems: Windows: Windows 7, Vista, XP, XP x64,Mac: OS X 10.4.11, 10.5.8, 10.6.x, 10.7.x.Rated Voltage 100 to 120 VAC.