ThinkPenguin TPE-N150USBL

Penguin Wireless N USB Adapter /w External Antenna for GNU / Linux Product page on ThinkPenguin
 * On eBay

While this device appears to be unbranded (at least from ThinkPenguin's photos), I would imagine this adapter is identical to the ALFA Network AWUS036NHA (which is AWB / Accton manufactured).

This device is FSF Certified.
 * Reddit thread on the device