HE502( USB2.0) 1.USB 2.0( up to 480mops), Backwards compatible with USB 1.1(12mps)2.Plug and play installation 3.Supports 5 USB2.0 Full-speed ports 4.Supports up to 127 devices 5.Over-current detection and protection 6.Supports Windows 98, 98SE, 2000, ME, XP,Vista, Mac HE501( USB1.1)