Prolific Usbtoserial Comm Port Version 333114 Driver Hot! Jun 2026

Starting around driver version 3.4.64, Prolific intentionally broke functionality for counterfeit PL-2303 chips (which flood the low-cost adapter market). was released before this lockdown, so it continues to work with many generic or clone adapters.

The "deep story" behind the Prolific USB-to-Serial version 3.3.3.114 driver prolific usbtoserial comm port version 333114 driver

(genuine):

Sources vary slightly, indicating either an original release around January 14, 2009 , or a re-release/update as late as February 25, 2022 Manufacturer: Prolific Technology Inc. Hardware ID: Commonly matches USB\VID_067B&PID_2303 Starting around driver version 3