Prolific Usbtoserial Comm Port Version 333114 Driver |top|

Prolific USB-to-Serial Comm Port driver version 3.3.3.114 is a critical legacy driver used to bridge serial devices—such as GPS receivers, scanners, and ham radios—to computers via a USB port. While newer drivers exist, version 3.3.3.114 is particularly significant for users of older hardware based on the PL2303 chip Google Groups Key Specifications & Compatibility Release Date: February 25, 2022 (latest repackaging). Operating Systems:

  1. Unplug the Prolific adapter.
  2. Download the driver package for Windows (extract ZIP if needed).
  3. Run the installer executable (if provided) or use Device Manager to update the driver:

    Have you successfully revived an old serial device using this driver? Share your story below to help other engineers and hobbyists navigate the complex world of legacy connectivity. prolific usbtoserial comm port version 333114 driver

    Compatible with Windows 11 (64-bit), Windows 10 (32/64-bit), Windows 8.1, and Windows 7. Hardware Focus: Prolific USB-to-Serial Comm Port driver version 3

    Device Manager: After installation, you can verify if the driver has been correctly installed by opening the Device Manager, locating your USB-to-serial adapter under "Ports (COM & LPT)", and checking for any warning symbols that might indicate a problem. Unplug the Prolific adapter

    This is why Version 3.3.11.114 is the gold standard for older hardware. It was released before Prolific implemented the anti-counterfeit detection. It works with genuine chips and most generic clone adapters.

    4. Manual Installation (If Installer Fails) For stubborn systems or driver signature issues:

    • In Device Manager > Port Settings > Advanced.
    • Reduce the Receive Buffer and Transmit Buffer to Low (1-8).
    • Uncheck "Use FIFO buffers" if problems persist.
    • Ensure your application (PuTTY, Tera Term, HyperTerminal) matches the target device’s baud rate (e.g., 9600, 19200, 115200).

    The Prolific USB-to-Serial Comm Port Version 333114 Driver offers several key benefits, including: