I couldn't find a ftpii that did USB2 support, so I just modded it myself using the USB2 code from Wad Manager 1.4. It requires a cios 249 with USB2 support and will mount as /usb2.
http://rapidshare.com/files/234157896/ftpi...9.USB2.zip.html
I haven't tried running this from usb yet, I just...