Features: Quickly test the USB port function of USB HUB hub/TypeC docking station to improve productivity/increase testing efficiency. With dust cover dustproof, debris, interfaces better security protections. Computer interfaces detection USB3.1/USB3.0/USB2.0 interfaces rate and function identification easily identify USB interfaces rate testing easily, improve detection efficiency. Easy to test mobilephone interfaces rate automatically identify the mobile phone interfaces is how much transmission rate. Material: Aluminum alloy + plastic colour: Black Package Contents: 1 x USB interface tester with hanging rope(The color of the lanyard is random, and the designation is not accepted) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.