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
