... 2.0 and backward compatible with USB 1.1* USB bus powered* Support 4 USB devices at the same time.* Supports Windows98, ME, 2000 ... , Mac OS X, and Linux OS, No need driver under Windows 98, ME, 2000, XP, Vista OS* Supports both OHCI and ... functions* Over-current detection and protection for each downstream port usb 2.0 hub