Video capture card and video capture box according to the function are a video capture card belongs to the built-in capture card, installed in the desktop PCI/PCIE slot, for example: Aipu Fei DVI2PCIeDUO is installed in the PCIe4X slot, the video capture box belongs to the external capture card, the interface is a USB interface, for example: DVI2USB3.0, now! A lot of video capture boxes are drive-free, plug the computer can be used directly without installing the driver.
The picture shows the style belongs to the four-way built-in analog capture card, there is no audio interface, generally used in monitoring more.