Hey I'm at my friends house and he just bought the USB WiFi connector but it wont work. We installed it and try to use it and it shows 3 bars of connection for a short while then it says error code 52103 I read about it and disabled fire wall but it still doesn't work so any help would be thankful.
Eh, I'm not a huge fan of these; they cause too many problems.
Try reading the Nintendo Customer Service for it, or take it in to get checked professionally if you can't find the problem yourself. Otherwise, I'd say you're better off with a router.