You cannot program the radio with a standard USB cable. You will need:
In this guide, we’ll cover how to find the software, the hardware you need, and the basic steps to get your radios programmed. Understanding the Software: Motorola CPS motorola cp140 programming software link
Plug the cable into the radio and the PC. Turn the radio on and set the volume to about 50%. You cannot program the radio with a standard USB cable
Visit the Motorola Solutions website and create a business account. Once verified, you can legally download the CPS and receive updates. Turn the radio on and set the volume to about 50%
Since the CP140 is an older model, many radio hobbyist forums and independent radio dealers host legacy files. If you use these links, ensure you are downloading the "Commercial Series CPS" and scan all files for malware before installation. Essential Hardware Checklist
Check your COM port settings in the CPS (under File > Setup). Ensure the COM port matches the one assigned to your cable in the Windows Device Manager.
If the software says the "Codeplug is not supported," you likely have a version of CPS that is older than the last version used to program the radio. You will need to find a newer version of the software.