MacBook Pro 15" Core 2 Duo Model A1211 Right Fan
If you’re looking for the microphone - it’s the small black cylinder beneath the upper right corner of the rightmost yellow rectangle. Its signal runs through the white connector in the lower right corner of the picture that is the lower right corner of the left I/O board. The blue wire is cold, the gray one is hot, and the next-close black one is the microphone-cable’s shielding guard.
Here's the entire link to them: https://sugru.com/tech-gadget/how-to-rep.... They want 15.28 $, and you can hopefully skip the whole procedure.