• Big expansion: Transform one of your computer's USB port into four USB ports

• Compatible with USB 3.0 and backwards compatible with USB 2.0 and USB 1.1

• Supports High-Speed(5Gbps), Full-Speed(480Mbps)and Low-Speed(12Mbps)USB device profiles

• Support auto switching between self-power and bus-power mode

• No diver needed, plug and play

Specification:

• Model: H-511A

• Cable length: 16cm

• Master chip: GL 3520

• Material: ABS

• Transmission rate: Max 5Gbps

• Compatible with: Mac OS 10.8/Windows

• Size: 10 x 2.3 x 1.5cm