Backward-compatible with all USB 2.0 & 1.1 devices ; 4 SuperSpeed USB 3.0 ports for additional peripherals ; Plug & play--no drivers required ; Compatible with Windows(R) & Mac(R) ; Supports data transfer rates up to 5Gbps ; Capable of fast charging up to .9A ; Bus-powered with overcurrent protection ; Compact ; 3-year warranty ; Black;