Prolific Usbtoserial Comm Port Version 333114 Driver

Double-click . Set it to Enabled .

Troubleshooting the Prolific USB-to-Serial Comm Port Version 3.33114 Driver

This is where version 3.3.3.114 comes into play. As a released before the support cutoff, it retains full compatibility with the older, deprecated PL2303 HX, HXA, and XA chipsets. It is one of the few versions that can reliably bring this hardware back to life. It provides a stable communication channel, ensuring consistent data flow without the driver conflicts or system instability that newer drivers might cause on older chips [2†L4-L7]. prolific usbtoserial comm port version 333114 driver

This is a very common and often necessary method, particularly if Windows Update keeps forcing newer drivers onto your device.

Follow the on-screen prompts to complete the installation layout, then restart your PC. Step 3: Force the Manual Rollback via Device Manager Double-click

Go to Device Manager > Ports (COM & LPT). You should see: "Prolific USB-to-Serial Comm Port (COMx)" without any exclamation mark. Right-click > Properties > Driver tab. Confirm Driver Version: 3.3.31.14 .

Right-click the device > Properties > Details tab > Property dropdown: . You will see something like: As a released before the support cutoff, it

If you are using a genuine Prolific adapter, always prefer the latest drivers from Prolific.com.tw for better security and stability.

A list of installed driver versions will appear. Look for the older version (e.g., ).