See 'WikiDevi' @ the Internet Archive (MW XML, Files, Images)
upgraded MW to 1.30 - maybe things are slightly less broken
Linksys WUSB100 v2
"P/N: 141751120001J R0" is silkscreened on the board in the FCC photos. The full model of this device (WN7511A-LF-88) is viewable in the FCC label pdf.