1. Product material: PVC 2. Product color: silver gray 3. Input interface: USB-A 3.0*1 4. Output interface: USB-A 3.0*7 5. Product size: 150*50*25mm 6. Indicator light: none 7. Easy to install, no software required 8. Equipped with seven groups of USB sockets with hot swap function 9. Friendly and ergonomic design, easy to carry