The AF9015 BDA Device is a type of USB TV tuner device that uses the AF9015 chipset. The BDA (Broadcast Driver Architecture) is a Windows driver model that allows third-party TV tuner devices (like the AF9015) to interface with applications that capture and display TV broadcasts (e.g., WinTV, Media Center, VLC, etc.).
The AF9015 chipset is often found in a variety of USB TV tuners and capture cards, and it requires the correct drivers for the device to work properly with Windows operating systems.