1 minute ago, OnionRings said:
Oh, maybe? Is it that 4th furthest hole? I was only looking st the first 3, didnt even see that 4th one until you asked and I double checked.
yep, that's it.
Unscrew it (with probably a smaller screwdriver, which you would also use for the M.2 SSD) and install it in the appropriate location (which is probably one further to the right, at 80mm).