1. Material: zinc alloy + PC 2. Interface: USB 3.0 to Type-C + Micro USB + 8 Pin 3. Read and write speed: USB 3.0 read 110MB/S, write 30MB/S 4. Function: data transmission + charging adapter 5. Small and mini appearance, easy to carry 6. Aluminum alloy shell, wear-resistant and durable, fast heat dissipation 7. Plug and play, no need to install the program driver, easy to use