It is said it has no antenna, and it is explicitly disabled in the kernel (that's not a problem, but if it's disabled on the n950 and not on the n9 it probably means there's strong reason to believe it does not work).

When I tried it, I never got a hint of a signal out of it. It might be because I'm failing to configure it, but considering I got fmrx working.... that's probably not the case.