1. The VL817 is a USB 3.1 hub controller. It supports combined connections for SuperSpeed (5Gbps), HighSpeed (480Mbps), FullSpeed (12Mbps), and LowSpeed (1.5Mbps) devices. 2. The seven USB ports support different USB specifications and speeds and can be used simultaneously. 3. Each USB port includes a current limiter, with a maximum output current of 1A. 4. It supports 12V to 24V external power supplies, providing sufficient power output. 5. It supports current backflow protection, preventing damage to the computer's built-in USB. Color: Blue Material: PCB Package Contents: 1 * HUB Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.