Try a different USB port or check if the device requires 5V or 3.3V logic. ⚙️ Verification To ensure the setup is successful:
Prolific officially dropped support for older hardware revisions like the PL-2303HXA and PL-2303X chips. The company designed newer drivers specifically to restrict these phased-out architectures from running on modern versions of Windows. The Prolific vs. Aftermarket Conflict prolific+usb+to+serial+comm+port+version+32+00+download+2021
Windows 10/11 may try to overwrite this older driver with a newer, non-working one. It is advised to turn off automatic driver updates. Try a different USB port or check if
you are likely encountering a system where the device has been assigned COM Port 32 in the Windows Device Manager The Prolific vs
The yellow triangle should disappear, and the device should now function correctly. Recommended Port Settings
Prolific updated its official drivers to combat counterfeit chips flooding the market. Modern Windows Updates automatically install these newer driver versions.