The Blackmagic Design Decklink Studio 4K video editing card (model BDLKSTUDIO4K) is an internal playback card designed for professional video production and editing. It features 4K HDMI output interfaces and 6G UHD-SDI input interfaces, supporting various video formats including UHD, SD, and HD. The card offers connectivity options such as composite, HDMI, 3G-SDI, audio, component, S-Video, and 6G-SDI, along with features like device control and 4K resolution. With functions as an encoder and decoder, this card is ideal for high-quality video editing and production tasks.