For a list of all currently documented Ralink chipsets with specifications, see Ralink.
ARGtek GM5 WLAN 802.11b/g/n USB Adapter
UFO Model No: ARG-0812
"AWUN3230A-2PA_V01", "P:121U323005V011", "PA:2215N323001001" is silkscreened on the board in the FCC photos.
- AsiaRF AWUN3230A
This device is presumed to use a 00:0C:43 OUI (it's on the FCC label)