What is the USB interface type of the Xiaomi MIX Flip?

The USB interface type of the Xiaomi MIX Flip is Type-C (USB 2.0). It also supports OTG.
For your reference, here is more information about OTG:
1. OTG stands for USB On-The-Go. It's a feature that allows a device (smartphone or pad) to act as a host and connect to other USB devices through a USB OTG cable or adapter;
2. By connecting to peripherals, you can expand the functionality of your mobile devices. For instance, you can transfer files from a USB flash drive directly to your phone or use a keyboard for typing;
3. OTG connections are plug-and-play, meaning you can connect and start using peripherals immediately without needing additional drivers or software.