If you find that the pinhole button at the bottom of the touch panel is not functioning, there is another way to acces the setup menu.
What do I need?
You will need these two items:
1. USB keyboard
2. USB-Micro > USB-A adaptor (included in Touchpanel box)
How does it work?
Use the USB adaptor to plug the keyboard into the USB port at he back of the touch panel.
Press F1 on the keyboard to access the setup menu.