7i77 and 7i77d differ from each other

quickly asked
got a 7i77 today.

was described in the store as 7i77, not 7i77d.
but the card itself is labeled on the back with a sticker 7i77D.

Do I really have a sourcing output?

now do not want to break anything because I connect it wrong...


 

That is a 7I77

thanks
great!