I just received my USB PlayStation2 adapter for 2 controllers I ordered in Hong-Kong for 3€. Works like a charm. Driver CD was included but not needed. Just plug it in. No issues with the strum bar or the fret buttons at all, simply adjusted the control settings in Frets on Fire and was done.
The sticker on it says "Tesun", so I went and looked for a product description so others might look at it, here it is
http://www.tesungame.com/en/ArticleShow.asp?ID=182
Though my USB plug looks a bit different, the overall design of it and the manufacturer are the same, so I guess that's it.
Just wanted to contribute another working adapter to the list.
