The CxTuner WDM TV Tuner Driver is a software driver for TV tuners (often referred to as TV cards) that are based on the Conexant chipset, specifically the CxTuner WDM series. The term WDM refers to Windows Driver Model, a set of Microsoft guidelines for developing device drivers for Windows, ensuring compatibility with the operating system.

This particular driver allows Windows to interface with a Conexant-based TV tuner card or external USB TV tuner device, enabling your computer to receive and display TV signals, capture video, and sometimes record live television broadcasts. The TV tuner driver essentially facilitates communication between your TV tuner hardware and the operating system.