Prolific Usbtoserial Comm Port Version 333114 Driver

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.

: It serves as the critical communication link for essential legacy devices, including: Barcode Scanners and POS systems. GPS Receivers used in marine or aviation navigation. Ham Radios and networking console cables. Industrial Modems and older Arduino-compatible boards. 🚀 How to Make It Work (The "Rollback" Trick)

Disclaimer: Prolific Technology Inc. maintains official driver versions. This article is for educational purposes. Always adhere to manufacturer guidelines when installing third-party drivers.

Execute the installer (typically .exe ) to add the driver files to your system. prolific usbtoserial comm port version 333114 driver

Unlike the newer versions, version 3.2.0.0 does not contain the strict chip-checking code, allowing both older genuine chips and clone chips to operate perfectly on Windows 10 and 11.

If you are currently seeing a "Code 10" error, follow these steps to roll back or manually install version 3.3.3.114. 1. Download and Extract

To make this driver work on modern systems, you must prevent Windows from automatically updating it to a newer, incompatible version: If the driver installs but still shows an

If Windows updates the driver automatically in the future, navigate back to > Ports (COM & LPT) > Right-click Prolific USB-to-Serial... > Properties > Driver Tab . Click the Roll Back Driver button. Windows will revert to 3.3.3.114 and generally remember your preference for this specific USB port.

This prevents Windows Update from automatically replacing your driver during installation. Step 3: Remove Existing Drivers Open . Expand the Ports (COM & LPT) section.

Using incredibly old versions of this driver on modern 64-bit systems can cause system instability. Version 3.3.3.114 is widely considered the most stable release that supports older hardware variations without triggering system crashes. GPS Receivers used in marine or aviation navigation

Download and installation (Windows)

The specific driver version (often dated around 2009) is widely recognized as the most stable, reliable "rollback" driver to fix these connectivity issues. This article provides a comprehensive technical guide on why this version is necessary, how to install it, and how to prevent Windows from breaking your setup during automated updates. The Core Problem: Why Version 3.3.3.114 is Necessary