Sabrent SBT-U2HA USB 2.0 Hi-Speed Bus-Powered Ultra Slim 4-Port Mini Hub Add USB devices to PC with Bus-powered 4-port USB 2.0 hub Fully compliant with USB 2.0 specifications and backward compatible with USB 1.1 devices USB 2.0 offers 480 Mbps transfer rates Supports up to 127 devices via daisy-chaining Built-in cable management keeps desk neat