Provides 4 SuperSpeed USB 3.0 ports for additional peripherals; Supports data transfer rates up to 5Gbps; Capable of fast charging, up to 0.9A per port with included power adapter; Backward compatible with all USB 2.0 & 1.1 devices; AC/bus-powered with overcurrent protection; Compact size ideal for both desktop & mobile use; Plug & play--Windows(R) & Mac(R) compatible; 3-year warranty;