Model: usb3.1 Number of interfaces: white for type-c3.0, black for type-c3.0, and black for type-c2.0 Whether external power supply: there is external power supply Transmission rate: 140m characteristic: 1. Suitable for mobile phone, macbook notebook, tablet computer 2. Detailed parameters: 24pin connector, upper 12Pin and lower 12Pin. advantages and disadvantages 3. The size of socket with C-type interface is as small as that of micro USB, about 8.3mm * 2.5mm, which can withstand 10000 times of repeated insertion and removal 4. The transmission speed can reach 5gp / s, which is twice that of 3.0. Standard cable with C connector can pass 3-5a current 5. USB3.0 hub is external (a free USB3.0 interface is required on the computer). Data transmission and power supply are carried out through USB3.0 data line, and four USB 3.0 interfaces are added to the computer. It supports USB 3.0 disk drive, resolution camera, video surveillance camera, digital camera, multi-channel audio and other peripheral devices with bandwidth. The transmission speed of USB3.0 reaches 5.0gb/s (the actual speed is 80mb / sec), and supports USB2.0 and USB1.1 downward. It can be used with a range of USB devices and allows multiple USB3.0 and traditional USB devices to operate simultaneously. The built-in current protection device can effectively protect the connected equipment and the hub itself in case of sudden power supply, providing durability and reliability Specifications: Power supply: usb5v / 600mA Line length: 100 mm Size: 77 * 41.4 * 12mm Package content: 1x4 Port USB hub