1. Aluminum alloy material, good at heat-dissipation and durable
2. Compact and simple design, not occupying space, easy to carry
4. Simultaneous use of 4 ports for higher efficiency
5. USB3.0 port: 5GB transmission speed, 1G file transmission in 3 seconds
6. USB2.0 port: 180Mbps transmission speed
7. Size: 8x2x2cm