See 'WikiDevi' @ the Internet Archive (MW XML, Files, Images)
upgraded MW to 1.30 - maybe things are slightly less broken
LevelOne WUA-0614 rev 2
150Mbps Wireless USB Adapter
Product page (currently for HW rev. 1)
"MT-WN715N-F1-V1.0" (or something similar) is silkscreened on the board in the FCC photos.
There are multiple revisions of this device. Revision 1 seems to use RTL8188SU. This version is presumed to be revision 2, but this may be incorrect.