Serial controllers are connected to the computer COM ports; you simply select which port to connect to. No configuration is necessary for serial controllers.

PC-Bus controllers plug into a computer bus slot. They are set to I/O address 280 and IRQ 5 by default.

• E271-2201 AccuTouch bus controller diagram. This controller does not require jumper selection to change the IRQ setting; it automatically configures to the IRQ specified by the Control Panel, Elo Touchscreen configuration. If the I/O port address is to be changed, jumper settings are required.
  
• E-281-4035 IntelliTouch bus controller diagram. This controller requires jumper selection of both IRQ and I/O port address. The settings must match the Control Panel, Elo Touchscreen configuration.