1. Material: aluminum alloy, electronic components 2. Transfer rate: 5 Gbps 3. Interface: Type-C 4. Number of ports: 7 5. SD and TF cards can be read at the same time, with high data transfer speed 6. Use HDMI port to mirror or extend your screen to HDTV, monitor or projector for video and audio transmission 7. Plug and play, no need for external hard drives, power supplies, wired keyboards, USB flash drives, 2.5mm external hard drives and other portable devices 8. One-piece aluminum alloy shell, sturdy and durable