Windows Update may attempt to "correct" your driver by installing the latest (non-functional) version. To prevent this:
: Manually installing and "locking" driver version 3.2.0.0 allows these devices to work again by bypassing the security checks found in newer releases. How to Download and Install (Step-by-Step) prolific+usb+to+serial+comm+port+version+32+00+download+2021
: Double-click the saved file and follow the prompts to complete the installation. Connect and Update : Windows Update may attempt to "correct" your driver
: Remove your USB-to-Serial cable from the computer before starting the installation. prolific+usb+to+serial+comm+port+version+32+00+download+2021