Decklink with HD key

dear all,
I am looking for a Decklink card supporting external HD (1080i25fps) key output.
from website I understand that only two boards have external key output: Decklink Studio and Decklink HD Extreme 3D, however it is not clear if both support HD key or not.
May you help me in choosing the right board?

Where may I find technical specification such as width and length of Decklink boards?
TechSpec page on BM website does not contain such detailed information.

thank you

[Albert Chu]

Hello,

If you are looking for HD internal and external keying, the DeckLink HD Extreme 3D+ is the way to go. The DeckLink Studio is only capable of doing SD keying.

As far as PCIe board dimensions, feel free to use our support page (listed below) to send us the inquiry on which exact product dimensions you are looking for. All of our PCIe products are full height cards.

http://www.blackmagicdesign.com/support/