The 7-port USB 2.0 hub provides 7 Hi-Speed USB 2.0 ports for your high-speed connectivity needs. This device is fully compliant to USB 2.0 specifications and provides a data transfer rate of up to 480 Mbps. The MS-UH2070 also supports USB 1.1 devices since it is backward compatible with USB 1.1 specifications. It is very easy to use Plug-n-Play hot swappable and portable. 7 downstream and one upstream ports Supports data transfer rate of up to 480 Mbps 40 times faster than USB 1.1 products connect up to 127 devices together ( through daisy chaining) Plug-n-Play hot swappable Automatically switches to the highest speed supported by peripheral Backward compatible with USB 1.1 specifications This is a self-powered hub with external power adapter included. Compatible Operating Systems: Windows 95 Windows 98 Windows ME Windows NT Windows 2000 Windows XP (32-bit and 64-bit) Windows Vista (32-bit and 64-bit) Windows 7 (32-bit and 64-bit) Mac OS 9 Mac OS 10.0 Mac OS 10.1 Mac OS 10.2 Mac OS 10.3 Mac OS 10.4 Mac OS 10.5 Mac OS 10.6 Linux