I've had trouble with getting a KB to work as well, but I'm still plugging away. But since the OP (original poster) didn't precisely answer the question, I'll ask if he/she doubltechecked the cable. I'm pretty sure I've heard of GoldX adapters working, but I personally bought a uab cable kit with 8 plug variations, and none of them was Mini USB A male. Have you gotten any OTHER USB perifierals to work ? To show up in system info ?
That may not be the problem, but it might be worth double checking. The mini plugs (A vs. look similar in pictures, but Mini B pinches inward towards the middle, while A kinda flairs out.
Just a though...