IOGEAR SuperSpeed USB 3.0 4-Port Hub with 20W Power Adapter (GUH374) 4 SuperSpeed USB 3.0 ports for easy expansion & super-fast connectivity SuperSpeed USB 3.0 data transfer rate up to 5Gbps Up to 10x faster than USB 2.0 Backward compatible with USB 2.0 & 1.1 Includes 5V/4A (20W) power supply allows connection of multiple hard drives or other power hungry devices Hot swappable: connect/disconnect devices without shutting down computer Plug-n-Play 4 SuperSpeed USB 3.0 ports for easy expansion and super-fast connectivity SuperSpeed USB 3.0 data transfer rate up to5 Gbps Up to 10x faster than USB 2.0 Backwards compatible with USB 2.0 and 1.1 Sleek, compact design will accommodate any workstation and is easily portable Hot swappable: connect/disconnect devices without shutting down computer Plug-n-Play