SIIG Inc SuperSpeed USB 3.0 4-Port Hub Adds 4 more USB 3.0 ports to your system Works with high-bandwidth USB 3.0 devices, such as external hard disks, high resolution webcams, camcorders, video surveillance cameras, digital video cameras, multi-channel audio and more USB 3.0 data transfer rate of up to 5Gb/s Per port over-current protection to protect both connected device and the hub itself from unforeseen power surges