How to replace bluetooth 2.1 by 4.0 on iMac 27 mid 2011

I have a relevant question ?

Someone can explain clearly how to do this replacement. There is part of the answer but not complete, so I will explainb what I know and I hope somebody could help me to complete.

1/ explanation of ifixit to deassemble imac : perfect

2/ we need bluetooth antena cable extension : easy to find

3/ we need BCM94331CD no BCM94360CD (because it don't work with windows if you use vmware)

4/ we need an adapter Mini PCI-E Adapter for BCM94360CD/BCM94331CD V3

And here began mi doubt : the adapter V3 (possible to encounter in ebay) have normaly D+ / D- conector.

What I don't know is if this adapter need also VCC (3.3v) and where connect to the adpater if needed.

after, I don't know the type of conector D+/D- on the adapter, to do a cable from the adapter to the original cable of bluetooth of the imac (mid 2011).

I don't know also the type of conector of this original cable and if it have to be male of female.

So has you see , I keep with a lot of questions and I need clear explanation to avoid to have bluetooth not working after doing this upgrade.

Thanks for your help