DeckLink Duo is perfect for developer. Get two separate SD/HD-SDI video streams in one PCIe card. That's great for capturing two video sources or even capture and playback of different video streams at the same time! DeckLink Duo is ideal for video servers and is supported by many ingest and playout applications. It fits into a single PCIe slot, but will appear to your computer as two independent SKI cards! Developing custom solutions is easy with Blackmagic Design's free SDK!