On Fri, Feb 3, 2017 at 12:47 PM, Tony Duell <ard.p850ug1 at gmail.com> wrote: > There is no magic box that you plug into a computer and it tells > you 'U5 is faulty'. At least not in general. > Hmmm... I think I'll make a box that you plug into a computer and it tells you 'U5 is faulty'. It won't be magic, though... :-)