Go back to the tab in the device's Properties window via Device Manager. Click the Roll Back Driver button.
Even after running the installer, Windows may still default to its newer, broken driver. You must manually point the hardware to the version you just installed. Plug your Prolific USB-to-Serial adapter into a USB port. Press and select Device Manager . Expand the Ports (COM & LPT) category.
What are you trying to connect (e.g., radio, GPS, router)?
Right-click the installer executable file (often named PL2303_Profiler_DriverInstaller_v3.3.3.114.exe or similar). Select .
If you're looking for a specific article or manual related to the installation or troubleshooting of the Prolific USB-to-serial comm port version 3.3.3114 driver, consider the following resources: prolific usbtoserial comm port version 333114 driver
(common in unbranded cables):
: Always download drivers from trusted sources to avoid malware. This means sticking to the official hardware manufacturer's website or, in some cases, Windows Update.
The Prolific USB-to-Serial COM Port driver version 3.3.3.114 is a legacy driver typically associated with the
Disclaimer: Prolific Technology Inc. maintains official driver versions. This article is for educational purposes. Always adhere to manufacturer guidelines when installing third-party drivers. Go back to the tab in the device's
If you're having trouble finding the file or need help with a specific , let me know: Are you on Windows 10 or 11 ?
: In the early 2010s, the market was flooded with inexpensive, counterfeit PL2303 chips from China. These clones used the exact same hardware IDs as genuine Prolific chips, making them indistinguishable to the operating system. The "Scorched Earth" Response
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 encounter this issue:
The most infamous issue with Prolific adapters is the error in Device Manager.
Follow the on-screen prompts to complete the installation, then restart your computer if prompted. Step 3: Force Windows to Use the Old Driver
What version are you running? (Windows 10, Windows 11?) What type of equipment are you connecting to your PC?
If you run Windows 10/11 Pro, you can prevent updates to just the Prolific adapter using its Hardware ID. You must manually point the hardware to the