Sweet, I was hoping it wasn't a single purpose "mass storage adapter" chip in the USB GBA cart. Works great by the way, at least, the mouse pad portion does; I wasn't able to get the other to detect as a HID compliant device (comes up as "Mass Storage") and I don't use the PC for games.
Sektor: I was personally hoping for something along the lines of a debug stub/PC handler that doesn't need an AP or wifi shunted into A7.