5Gbps 4 Port USB 3.0 Hub AC Power On/Off Switches Adapter Cable for PC Laptop,4 Port USB 3.0 Hub AC Power On/Off Switches Adapter Cable for PC Laptop 5Gbps, Win 8, MAC and so on, Built-in over-current protection to protect both connected devices and the hub itself from unforeseen power surges,With highest speed of 5G/S, the hub can be compatible with Win 8,1.Adapter Cable for PC Laptop 5Gbps 4 Port USB 3.0 Hub AC Power On/Off Switches.