See 'WikiDevi' @ the Internet Archive (MW XML, Files, Images)
upgraded MW to 1.30 - maybe things are slightly less broken
Proware PW-RN401D v3
Assumed AR9331 device, similar to the TL-WR740N v4 / v5 (TP-LINK is a Proware brand)
"1108263401-3.0" and "Rev:1.0sp3" is silkscreened on the board in the FCC photos.
also includes the PW-RN401 (integral antenna)