This bluetooth module is i think at the same time wifi one - combo(the black one with the sticker on the back which it says to connect to a usb expansion slot).802.11 BGN 1T1R Wireless Adapter.
the are lots of reviews and you can see a little intel pci card with cables wich I have not found in my package, please take a look here: A quick look at Intel's DZ77GA-70K motherboard - The Tech Report - Page 1
Aye this is not inside.I thought this was the wifi one but the black(bluetooth+wifi combo) one is the one the put in the retail product it seems.But the black one works normally 
The WiFi module you are looking at this review is the Intel Centrino Advance-N 6205 For Desktop. It has an Internal PCi-E x1 Card with the outside antenna (the white rectangular with the hole in the middle), and it was never included in the packaging of DZ77GA-70. Intel just send the review packages with this WiFi dongle included but never advertised this board with this WiFi Card.
