Open Finder > Applications > Utilities > Terminal . Run: sudo rm -rf /Library/Extensions/SiLabsUSBDriver.kext (if it exists).
You should see a device named something like /dev/tty.SLAB_USBtoUART or /dev/tty.usbserial . Zebex Crd-20 Driver For Mac
Here is the safe path to getting it working: Open Finder > Applications > Utilities > Terminal
Disclaimer: Always ensure you have a Time Machine backup before installing Kernel Extensions on macOS. Open Finder >
That string is what you type into your POS software’s "Scanner Settings" field. If you are using an Apple Silicon (M1, M2, M3) Mac, you are in the clear. The modern Silicon Labs drivers are universal (ARM64).