The PCTV Hybrid Pro Stick is a device manufactured by Pinnacle Systems (now part of Avid Technology) that allows you to receive television signals on your PC. It typically works as a USB TV tuner for receiving both digital (DVB-T, ATSC) and analog TV signals, depending on the model. It is often used in combination with software for watching TV or recording broadcasts on a Windows PC.

The Windows driver for the PCTV Hybrid Pro Stick is the software that allows the device to communicate properly with your computer's operating system, enabling the PC to detect and use the device for TV reception and recording. Without the driver, the TV tuner hardware won't function properly with your PC.