Linux-friendly USB 802.11n

[VirginSnow at vfemail.net]

Hello, all,

I'm looking for a "Linux-friendly" 802.11n (Wireless N) USB adapter.  By
"Linux-friendly", I mean I'm looking for one that will work with
in-kernel drivers (no separate module to compile & install), without
funky compatability layers (like NDIS wrapper), doesn't require extra
firmware, and is free/open source.

I figure N is mature enough, now, that some hardware like this must
exist.  Any suggestions?

Thanks!