Adding a USB A port to USB C enabled devices, so that you can connect standard USB peripheral, such as flash drive, USB Hub, printer cable, card reader, keyboard or mouse etc to your USB c Smartphone, tablet, For MacBook, laptop for data transmission. For USB C OTG Supported phones, this converter can turn your phone as a host, then you can enjoy movies or music directly from your USB flash drive. You can also gaming with a USB game handle, typing with a keyboard etc. Much more convenient operation bring better working and entertainment experience. Note 1. For a better using experience, we suggest to use this product for data transferring but not for charging. 2.For OTG function, please make sure that your device is OTG Supported. 3. For Gamepad Switch, OTG function is available to attach a mouse or keyboard but not a flash drive / HDD to Gamepad Switch.