Blackmagic Design UltraStudio 4K Thunderbolt 2 External 1RU Rack Mount & Table-Top I/O Device Box, 2x 20Gb/s Thunderbolt 2 Ports BlackMagic Design UltraStudio 4K Thunderbolt 2 External 1RU Rack Mount and Table-Top I/O Device Box - Software CD (Media Express or Disk Speed Test or LiveKey or BlackMagic Design System Preferences or BlackMagic Design Driver on Mac OS X ) - BlackMagic Design 3 Year Warranty This Item Includes: UltraStudio 4K Thunderbolt 2 supports popular compressed video formats such as ProRes and DNxHD as well as 10-bit uncompressed video. When working with uncompressed video all captured images are a perfect pixel-for-pixel clone of the source without any quality loss UltraStudio 4K Thunderbolt 2 features built-in 6G-SDI connections that operate at four times the speed of regular HD-SDI, meaning you can capture Ultra HD and 4K with only one BNC cable instead of four. UltraStudio 4K Thunderbolt 2 also supports dual stream 3D with capture and playback of two independent channels. Thunderbolt ensures low latency and highly accurate time synchronization for high quality capture and playback.