Prolific Usbtoserial Comm Port Version 333114 Driver

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.

To confirm which driver version is active and chip behavior:

Summary

as Administrator.

Select the Prolific driver update from the list to prevent Windows from downloading version 3.3.3.114 automatically. Final Alternative: Upgrading Your Hardware prolific usbtoserial comm port version 333114 driver

To ensure this specific version is active, you must manually select it in Device Manager: Prolific Usb-to-serial Comm Port Version 3.3.3.114 Download

This specific version is often sought because newer Prolific drivers (e.g., version 3.8.x or 3.9.x) actively block older PL2303 chipsets (like PL-2303HXA and PL-2303X) which Prolific phased out in 2012. Code 10 Fix: Starting around driver version 3

✅ Keep v3.3.3.114 for legacy Windows 7/8 systems or clone adapters. ❌ For Windows 11 or production environments, invest in proper hardware with actively supported drivers.

Right-click the installer executable file (often named PL2303_Profiler_DriverInstaller_v3.3.3.114.exe or similar). Select . Select the Prolific driver update from the list

Prolific USB-to-Serial Comm Port Version 3.3.3.114 Driver: A Comprehensive Guide The Prolific PL-2303 Go to product viewer dialog for this item.

: Make sure the driver version you download is compatible with your operating system version (Windows 10, 8, 7, etc.) and architecture (32-bit or 64-bit).