Critical Warning:

⚠️ Prolific drivers are frequently counterfeited. Always download from the official Prolific website or a trusted hardware vendor’s support page.

Ports (COM & LPT)

Right-click the device under and select Update Driver . prolific+usb+to+serial+comm+port+version+32+00+download+2021

Installation — Windows (example procedure)

1. Download the PL2303_Proilific_v3.2.0.0.zip archive from a trusted source.
2. Extract the contents to a folder, e.g., C:\Drivers\Prolific32.
3. Open Device Manager (Right-click Start button > Device Manager).
4. Plug in your USB-to-Serial adapter. It will appear as Prolific USB-to-Serial Comm Port (Error) or under Other devices.
5. Right-click the device > select Update driver.
6. Choose Browse my computer for drivers.
7. Click Browse and navigate to C:\Drivers\Prolific32.
8. Ensure Include subfolders is checked. Click Next.
9. Windows will warn about an unsigned driver (if not WHQL). Click Install this driver software anyway.
10. After installation, the device will show as Prolific USB-to-Serial Comm Port (COM3).

Verdict for 2021 users:

Version 32.00 was a hero. For current projects, it is a temporary bandage. The Ultimate Guide to Prolific USB to Serial