: Windows often tries to "update" this working driver to a newer, broken version. To prevent this, use the "Show or Hide Updates" troubleshooter tool from Microsoft to block the specific Prolific update.
: Right-click the device and select Update driver . Manual Selection : Choose Browse my computer for drivers . prolific+usb+to+serial+comm+port+version+32+00+download+2021
Follow the on-screen prompts to complete the legacy installation wizard, then restart your PC. Step 4: Force Windows to Use Version 3.2.0.0 Plug your USB-to-Serial adapter back into a USB port. : Windows often tries to "update" this working
As of 2021, the genuine driver was available only from: Manual Selection : Choose Browse my computer for drivers
As mentioned, version 3.2.0.0 holds a unique place in history. Here's a closer look at this specific version:
The Prolific PL2303 series of USB-to-Serial bridge controllers remain a popular choice for connecting legacy serial devices (routers, GPS receivers, industrial equipment) to modern computers without native RS-232 ports. In 2021, Prolific issued driver version 32.00 – officially listed as “Prolific USB-to-Serial Comm Port version 32.00” – to improve compatibility with Windows 10 and early Windows 11 builds.
While this guide focuses on 2021, it's worth noting the current status (as of 2024–2025):