This product solves the problem that the usb c computer on the market cannot connect to more usb external devices because there is only one c port. Use it to connect your computer or mobile phone with your type c port. Interface: USB C 3.1-M /USB3.0 x 1 /USB 2.0 x 2/SD/TF. Material: PCBA/aluminum alloy shell/tinned copper core wire/PVC outer cover. Color box: 80x150x17mm.