From the list of devices, select the device you need to configure, for example the SHARPUPX500MSR, and click on "Device Settings". When the system prompts you for a logical device name, you can keep the default setting.
During that process, when the system prompts to install OPOS drivers, click "Yes", and select the device you want to install on your POS. In this example, select the Card Reader, and click on "Modify", to associate it with the SHARPUPX500MSR OPOS driver.
Device
OPOS