Blackmagic Design Mini Overview:

The Blackmagic Design DeckLink Mini Monitor is a 1-lane PCIe slot playback card with SDI and HDMI outputs, compatible with 1-, 4-, 8-, and 16-lane PCIe slots. In contrast to a full capture and playback input/output card, the DeckLink Mini Monitor provides you with just the playback and monitoring functionality for performing color-correction and delivering client presentations on high-resolution HDMI or SDI monitors. The card supports up to 1080p30 formats and it outputs up to 10-bit uncompressed video.

You can output via both the SDI and HDMI connections simultaneously or just one of them. The outputs are active and begin functioning right away when you plug into them. The card also automatically switches between SD and HD formats, so it'll handle all common video formats. Two PCIe shields are included for both full-height and low-profile PCIe slots.