The MediaTek WiMAX RNDIS-based device is a network interface used for wireless broadband connections via WiMAX (Worldwide Interoperability for Microwave Access) technology, which provides high-speed wireless internet access over long distances. The RNDIS (Remote Network Driver Interface Specification) part refers to a Microsoft protocol for networking devices, commonly used for devices like USB modems, mobile hotspots, or similar connectivity solutions.

In essence, the MediaTek WiMAX RNDIS-based device is a type of wireless network adapter that connects to your computer via USB or other interfaces, allowing it to connect to a WiMAX network. To make this device work properly on a Windows-based computer, you will need the appropriate driver.