Aluminum alloy + ABS material USB3.0 transmission protocol 12V2A external power supply Support BC1.2 protocol, maximum 5V1.5A. Support hot swap, compatible with Windows, Mac OS and Linux; Data Cable: Separate Type-A to Type-B Cable (1m length) 10 USB are extended, allowing multiple USB devices to be operated simultaneously and quickly. Data transfer rates with up to 5Gb / s (10 times faster than USB 2.0), you can enjoy smooth data transfer. Each USB port has on / off switch. You can turn off other ports if you are not using them to save power and energy. The LED light helps to detect if ports are turned on.