SimpleTech SimpleDrive 250 GB External USB 2.0 Hard Drive USB 2.0 port; also backward compatible with USB 1.0 and 1.1 devices Speeds as high as 480 Mbps; provides plenty of bandwidth for your most data-hungry applications Operates seamlessly with both Microsoft Windows and Apple Macintosh operating systems Diagnostic LEDs provide port status for each port Easily integrates with your existing network at home or in the office