The PCTV DVB-S Dual Common is a type of satellite TV tuner card designed to receive DVB-S (Digital Video Broadcasting - Satellite) signals, allowing you to watch and record satellite TV on your computer. The Dual in its name refers to the fact that it has dual tuners, meaning it can receive two satellite channels at the same time, allowing for multi-channel viewing or recording.

The Windows driver for this device ensures that your operating system recognizes and communicates with the PCTV DVB-S Dual Common tuner card. It allows you to install and configure the hardware so that it works with software for watching TV, recording programs, and accessing features like Electronic Program Guides (EPG).