Skip this step if you have a Wiz.
Open Optima Config Window
Select Device model and Power mains frequency
In the Neurobit settings window that opens, click the arrow to the right of the Device mode field and from the dropdown menu, select Neurobit Optima+ 4 USB.
Click the arrow to the right of the Power mains frequencyfield and from the dropdown menu, select the frequency for your country. North America: 60 Hz.