The AVerMedia A373 MiniCard Dual DVB-T is a TV tuner card that allows your computer to receive and watch digital terrestrial TV (DVB-T signals). It's designed as a small form factor MiniCard that fits into compatible devices, typically laptops or small form factor PCs, enabling them to receive over-the-air DVB-T broadcasts. The card has dual tuners, meaning it can handle multiple channels or streams simultaneously.