1. VL817 supports combined connection of SuperSpeed (5Gbps), High Speed (480Mbps), Full Speed (12Mbps) and Low Speed (1.5Mbps) devices. 2. 7 USB ports support different USB specifications and speeds and can be used simultaneously 3. Each USB port contains a current limiting switch with a maximum output current of 1A 4. Supports 12V-24V external power supply with sufficient power output 5. Supports current backflow prevention function and not damage the USB port that comes with the computer Name:HUB Module The product appearance and printed words depending on the batch, but this does not affect use. Colour: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.