The Android USB Ethernet RNDIS (Remote Network Driver Interface Specification) driver is used to enable network connectivity between an Android device and a Windows computer via a USB connection. Essentially, this driver allows your Android device to act like an Ethernet adapter (network interface) when connected to a Windows computer using a USB cable.

This functionality is particularly useful when you want to share the internet connection of your Android phone with your Windows PC, or when you're using your phone as a mobile hotspot and want to connect your PC through USB instead of Wi-Fi. It also allows your Android device to communicate with the Windows PC over a network connection for data transfer or other network-related tasks.