Skyvertex NSU-11NP10-x

Overview
It would seem that this adapter is alternately sold as the NSU-11NP10-2 (2 dBi antenna model) and NSU-11NP10-5 (5 dBi antenna model).

"QJ-WA500-A", "12166-4006", "94V-0", and a date code of 0921 (May 2009) is silkscreened on the FCC EUT's board.

Links of Interest
Datasheet

Shown in this wifi-ita.com comparison (vs AWUS036H) thread
 * "QJ-WA500-A", "12166-4006", "94V-0", and a date code of 0921 (May 2009) is silkscreened on the board of the unit shown.
 * The PAIC is marked with "J2", "4227", "0804".