I spent 30 min going through all the 'clearance' open boxes at MicroCenter today with my notebook, trying to see if any came up as supported. None did. I went to the section with the unopen items and found the Asus claiming Linux support. So much for that; looks like you have to build it yourself and hope for the best.
So is there a USB 11n dongle that IS supported and can be had for < $20? Actually an external antenna is a plus as it will be on a server that at times will be a client and times an AP.