Adds 4 USB 2.0 Hi-Speed portsFully Compliant with USB 2.0 specificationSupports up to 127 Hi-Speed devicesBackwards compatible with USB1.1Support data transfer rate at 1.5/12/480 MbpsIndividual port over-current protectionFriendly & ergonomic design, easily portableProvide up to 500mA per port s..