I did a design, yet not usb, just a breadboard, but which would allow me to try different overclocking, chaining configurations...
But guess what ? I've been waiting for chips that never arrived !
Here it is :
http://s27.postimg.org/fvyszi9tv/avalon.jpgSorry for the quality, but as it'll probably end in thrash, I didn't take time to make a good picture. And by the way, why do laptop cams are so crap ? Looks like a picture taken with a year 2001 phone.
And yes memoryx, as I stated earlier, USB is not meant to drive high current. Doing this is bad and could even be dangerous.