SIIG SuperSpeed USB 3.0 4-Port Powered Hub, USB, External, 4 USB Port(s), 4 USB 3.0 Port(s)

Adds 4 USB ports to desktop or laptop system using a single USB connection; Supports USB 3.0 data transfer rates up to 5Gbps and backward compatible with USB 2.0 or USB 1.1; The included AC power adapter provides external power source when needed - great for power-hungry devices such as external storage devices; Ultra-slim design with built-in USB cord makes this USB hub an ideal expansion companion while on-the-go; Over-Current protection feature further protects the hub from unforeseen power surges; Aluminum housing and molding with woven braided cable adds extra durability.