1. Material: aluminum alloy 2. Output interface: 4K HDMI+2xUSB 3.0+3.5mm audio out+SD/TF card slot 3. USB3.0 interface: 5Gbps transfer rate 4. HDMI interface: 4K (3840x2160) 60Hz HD output 5. SD/TF card slot: can read and write SD card and TF card at the same time, 5Gbps rate 6. For Surface Pro GO 7. Dimensions: 97x36x12mm
