Ps;I know OP has stated it does work in Windows I just want to confirm.
I used the AR5BHB92 and if I remember right, I think Windows installed the drivers for it automatically. Not quite the same model as yours, but chances are even if you can't find a driver for it online, it'll work ok (especially on Windows 8). I can't be sure of course without trying it though.
My new problem:
I actually passed down my T510 onto my sister not long ago and she wanted OSX on it, so I did a fresh install in the same way I did (10.8.2). She says she gets occasional freezes (not kernel panic I don't think, it just freezes and she has to hard reset). And also an NTFS drive I put in the second drive bay "disappears" from Finder occasionally. I don't remember having either of these problems when I used it. Does anyone have any ideas about what I could suggest to her for a fix? Or to find out what's happening? The freeze problem is more pertinent at the moment. I already suggested permissions repair and disk verify (the disk is fine apparently, despite her knocking it off the sofa once while it was running..)
It's a bit difficult for me to spend time on it diagnosing the problem myself because she lives > 100 miles away.