If the driver installs but still shows an error, your cable may use a very old "PL-2303XA/HXA" chip which Prolific officially discontinued in 2012. Version 3.3.3.114 is your best chance, but ensure you have disabled "Windows Update" for drivers, or Windows will immediately overwrite it with a newer, non-working version.
The Prolific USB-to-serial comm port driver you're referring to seems to relate to a specific version (v3.3.3114) of the driver software for USB-to-serial adapters made by Prolific Technology Inc. These adapters are commonly used to provide a serial port interface for devices that connect via USB.
Execute the installer (typically .exe ) to add the driver files to your system.
: These new drivers didn't just block fakes; they also dropped support for many older, genuine Prolific chip versions (like the PL2303HXA), rendering millions of perfectly working legacy devices obsolete. Why Version 3.3.3.114 is a "Holy Grail"
