The Blackmagic Design DeckLink Duo 2 PCIe Capture and Playback Card is a high-quality video I/O card designed for professional video editing and playback tasks. With 4x BNC SDI inputs, 1x BNC Blackburst input, and 1x tri-level sync input, this card offers versatile connectivity options for capturing and playback of SDI video signals. The card supports SDI broadcast formats in various bit depths and color spaces, as well as embedded audio with 16 channels. Compatible with Windows, macOS, and Linux operating systems, this Blackmagic Design product is ideal for those looking for a reliable and efficient solution for their video editing needs.