I just stumbled onto this
http://ixsvr.dyndns.org/It's a support page for a couple of converters (ps2->usb, adb->usb,...) which seem to be not teensy based and are available for purchase on yahoo auctions japan. They are closed source, so I don't see a reason to use them over hasu's converters (maybe if you really like/need USB B connector), but still, I find it interesting.
