If your device is failing with "This device cannot start (Code 10)" in Device Manager, you need to downgrade to this version.
The driver acts as a time capsule. Because it was compiled before these anti-clone validation blocks and EOL code paths were introduced, it interacts flawlessly with authentic legacy chips and clone hardware alike. Technical Specifications: Prolific 3.3.2.105
This version is specifically used to fix "Code 10" errors on older PL2303HXA or PL2303XA chips that have been phased out by Prolific.
: Professionals across various industries use Prolific 3.3.2.105 to automate routine tasks, enhancing operational efficiency and productivity.
Modern Windows systems automatically download the latest Prolific drivers. However, these newer versions intentionally disable support for older or "counterfeit" PL2303 chips. This results in frustrating errors like: Note: How to not get scammed with Prolific (PL2303) USB
This paper examines the technical significance and enduring utility of (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
: Select Let me pick from a list of available drivers on my computer .
Use this version if you are experiencing "Code 10" errors or if your USB serial device disconnects frequently. Use the official latest drivers (v3.8+) only if you are certain your adapter contains a genuine Prolific chip.
Modern Prolific drivers automatically downloaded via Windows Update will flag End-of-Life (EOL) chipsets—such as the —with an error flag. Instead of working, the Device Manager shows a yellow triangle and an explicit warning stating the hardware is unsupported.
Disclaimer: Use older drivers carefully. It is highly recommended to use genuine Prolific products with the latest certified drivers whenever possible to avoid security and functionality risks. Proactive Follow Up If you're still having trouble, please tell me: Are you seeing in Device Manager? What is your operating system (Windows 10, 11, or older)?
: The market became flooded with unauthorized, clone Prolific chips. In response, Prolific released newer Windows Update drivers designed to detect clone hardware or obsolete chip revisions. Instead of translating data, these newer drivers purposely shut the device down, throwing a generic "This device cannot start. (Code 10)" or "PL2303HXA Phased out since 2012" error. What Makes Driver Version 3.3.2.105 Special?