Just a Belkin mini USB - it basically sits flush with the top of the socket. There are plenty of other brands though. Just make sure whatever you get has at least 2 amps out (at 5v this is 10w) - mine has 2.1A, I think some are up to 3A.oh sweet, didn't know that. what's the low profile USB socket you are using? for the cable anything particular?
cheers