I got a bulky tablet computer from ewaste and it turns out the operators of this tablet created an add-on which involved INJECTION MOLDING a piece to hold a USB serial adapter and USB HUB to the back of the tablet.
so much work and expense for so little results
EDIT: correction: they milled this piece of plastic.
This is the tablet itself. It steals a lot of iBook design language.
It's a TabletKiosk Sahara Slate PC i400. It's a Core 2 Duo, with a 12" screen.