CAREFULLY! It's probably not what you are looking for.
This is a very special adapter. It will not work as you expecting.
DVI-D ->Adapter-> VGA cable -> Display will NOT work
I guess the only way it can work is
DVI-D ->Adapter -> VGA cable -> Adapter -> DVI-D -> Display
but for this you need 2 of them, and I not guarantee, cause I not tested (I bought just one by mistake).
Read about DVI-D and DVI-I and you will understand why this one is probably not what you are looking for.