Hi there,
The Radius actually uses a completely different circuit board than the P3 but when you see the Radius you will notice that while it's a small opening, we magnify the screen through the lens so it looks much bigger. It's actually very easy to see. It's sized mostly to keep things compact. We have optimized everything so it fits this screen well.
We are going to talk about the USB port more tomorrow, or later today I should say, so I think we can answer your other question soon.
Cheers
omg. That's actual real-time information.