Let's start over from the beginning. Are the trunked systems not loading into the scanner or just won't scan? What does the scanner display show when trying to scan the trunked systems? You may have programming errors for the trunked systems. Please attach your programming file and I will take a look at it. You will need to zip the file to be able to attach it. Click on Attach files and open the zipped file. I have ARC500, Win500, and PSREdit500 software. Plug the cable into your computer. Go to the Device Manager and Ports. Expand Ports. Does it show USB Serial Port (COMx) where x is the port number? If I find programming errors and your scanner receives the trunked systems after uploading again, we will know the cable is working. What is your city, county, and state and which trunked systems do you want to monitor?