Greetings,
Today I hooked up 3 external ELO touch screens to our GIO running 2.0. I have screen 1 set on the left, then A/ B (on board) then 2 and 3 external on the right. If you identify the screens everything is fine, but if you go into the ELO settings menu and identify the usb touch screens here, 1 is fine and 3 (which it calls 5) is fine, but screen 2 (which it calls 3) shows up as the on board A touch screen. These are the only 3 screens listed. So, if you try to calibrate screen 2 (which it calls 3) the touch gets messed up. The odd thing is, though it indentifies by popping up on GIO screen A, it you hit calibrate it shows up on the correct screen, but the touch does not work right.
They only way I got around it was to reset to the default calibration and not calibrate this screen.
I am not sure if this is a bug or, not, but it took me a lot of playing around.