Anti-glare airport module location confusion

Hi there,

I switched my optical drive to fit an hdd bay after upgrading to an SDD. Everything went smooth, but; my wifi stopped working. (The wifi symbol shows "No hardware installed"). I tried everything I can think of, resetting smc, pram etc., retracing my steps, making sure I reconnected all the cabled; no dice, the wifi card seems bust.

So, I decided; let's try and get a new airport card. But I'm confused where/what my airport card in my anti-glare model actually is.

This (MacBook Pro 15" Unibody Mid 2009 Upper Case Replacement step 36) guide says the card on top of my optical bay is my bluetooth / airport card, while the optical drive guide (MacBook Pro (15 Zoll, Mitte 2009, Unibody) optisches Laufwerk austauschen step 11) says it's just a bluetooth card.

Can anybody tell me if the card on top of my optical drive is in fact just a bluetooth card, or a bluetooth + airport card?