If you are installing this driver to fix a "Code 10" error or to get a programming cable working:
The primary reason users specifically seek version 3.3.2.105 is due to the prevalence of counterfeit Prolific chips in the market.
Prolific 3.3.2.105 represents a “sweet spot” driver — functional, stable, and permissive with genuine and some third-party adapters. While officially superseded, it remains a vital tool in retro-computing, embedded development, and industrial maintenance where newer drivers would reject otherwise functional hardware.
Note: Always verify your chip’s authenticity. Using this driver with counterfeit chips may work, but stability isn’t guaranteed, and newer OS updates may eventually override it.
The Prolific 3.3.2.105 driver is widely recognized as the "legacy" or "fix-it" driver used to resolve compatibility issues with older or counterfeit PL2303 USB-to-Serial chips on modern operating systems like Windows 10 and 11. Why this specific version is used
Newer Prolific drivers (version 3.8.x and later) are designed to disable older chipsets (like the PL2303HXA) and "fake" chips by returning a "Code 10" error in Device Manager, often with the message: "PL2303TA DO NOT SUPPORT WINDOWS 11 OR LATER". Version 3.3.2.105 (released on 10/27/2008) is the most common version used by enthusiasts to bypass these restrictions and restore functionality. Driver Specifications Version: 3.3.2.105 Release Date: October 27, 2008
Supported Chipsets: Older PL2303 versions, including HXA, XA, and generic clones Hardware ID: Typically USB\VID_067B&PID_2303 How to Install and Fix "Code 10" prolific 3.3.2.105
To use this version on a modern PC, you must manually "roll back" or force the installation, as Windows Update will often try to replace it with a non-working newer version. PL2303HX USB-UART Converter Cable - Handson Technology
Prolific Driver v3.3.2.105 (released October 27, 2008) is widely recognized in the tech community as the "last stable" driver for older or cloned Prolific PL2303 chips. While modern Windows versions (10 and 11) typically try to install newer drivers, those often deliberately disable older or non-genuine chips. Purpose and Importance Legacy Support : It is the final version compatible with end-of-life The "Code 10" Fix
: Newer Prolific drivers often trigger a "This device cannot start (Code 10)" error in Device Manager when used with older hardware or clones. Version 3.3.2.105 is the standard workaround to restore functionality. Wide Application : This driver is critical for programming cables used with radios, GPS receivers, and older industrial serial devices. Key Technical Details Release Date : October 27, 2008. OS Compatibility
: Originally for Windows XP/Vista/7, but it is frequently used as a manual override on Windows 10 and 11 Chip Detection
: Unlike newer versions, this driver does not contain the "software lock" that disables unauthorized or cloned hardware. How to Install on Windows 10/11
Because Windows will automatically "update" this back to a non-working newer version, a specific manual process is required: Download and Run : Execute the driver installer for version 3.3.2.105. Device Manager : Right-click your PL2303 device and select Update Driver Manual Selection If you are installing this driver to fix
: Choose "Browse my computer for drivers" > "Let me pick from a list of available drivers on my computer". Pick the 2008 Version : Select the driver labeled
"Prolific USB-to-Serial Comm Port Version: 3.3.2.105 [10/27/2008]" Disable Updates : Many users find they must manually disable driver updates
via Group Policy or third-party tools to prevent Windows from overwriting it. Microsoft Community Hub PL2303 issues (Prolific USB to Serial Drivers) Win 11
Visit the website of the device manufacturer or the Prolific website to see if there are updated drivers available for Windows 11. Microsoft Community Hub Prolific 2303 driver and Win 10 - Cloudy Nights
This paper examines the technical significance and enduring utility of Prolific PL2303 Driver version 3.3.2.105 (released October 27, 2008). While officially legacy software, this specific version has become a vital community-standard workaround for maintaining functionality in older USB-to-Serial hardware. The paper explores why modern Windows updates frequently disable these devices and how version 3.3.2.105 serves as a critical fix for both authentic and "clone" chipsets. 1. Introduction: The Serial-to-USB Transition
The transition from native RS-232 serial ports to USB necessitated the development of bridge controllers. Prolific Technology Inc. became a dominant manufacturer with its PL2303 series, integrated into everything from industrial printers to radio programming cables. However, the proliferation of counterfeit or "cloned" Chinese chips led Prolific to release newer drivers that actively identify and disable these unauthorized devices. 2. Technical Context of Version 3.3.2.105 Note: Always verify your chip’s authenticity
Driver version 3.3.2.105 is widely regarded as the "last stable version" before Prolific implemented stringent hardware-checking mechanisms.
The "story" behind Prolific driver version is a famous saga in the tech community involving a battle against counterfeit hardware. It is often referred to as a "driver sabotage" or "kill switch" event that affected thousands of users with older USB-to-serial adapters. The Conflict: Real Chips vs. Clones
chip, made by Prolific Technology, was the industry standard for converting USB signals to Serial (RS-232). The Counterfeits
: Due to its popularity, cheap "clone" versions of these chips flooded the market, often sold in unbranded cables (like those for Baofeng radios VEX robotics equipment). The Reaction
: To protect their revenue, Prolific released newer drivers that performed a "hardware check." If the driver detected a counterfeit chip, it would intentionally fail to work, showing a "Yellow Mark Error Code 10" in the Windows Device Manager. Why Version 3.3.2.105 is "Famous"
(released around October 2008) became the "holy grail" for users because it was the last stable version that did not contain the counterfeit-detection code.
: When modern Windows versions automatically update to the latest (broken) driver, tech-savvy users manually roll back to v3.3.2.105 to make their "fake" or "legacy" cables work again. The Persistence
: Because Windows 10 and 11 constantly try to "fix" the driver by updating it back to the non-functional newer version, users often have to use scripts or third-party "Code 10 Fix" tools to force version 3.3.2.105 to stay installed.