See 'WikiDevi' @ the Internet Archive (MW XML, Files, Images)
upgraded MW to 1.30 - maybe things are slightly less broken
Siemens Gigaset USB Stick 108 (S30853-S1038-R351)
"3751-06210101G" is silkscreened on the component side of the board in the FCC photos. "UW621-H REV:XA" is silkscreened on the opposite side.