Prolific Usbtoserial Comm Port Version 333114 Driver Here

The Prolific USB-to-Serial Comm Port driver version 3.3.3.114 (released January 14, 2009) is a "legendary" piece of software among tech enthusiasts and engineers. Its story is one of a decade-long battle between software updates and aging hardware. The Story of a "Magic" Driver

Plug in your USB-to-serial adapter – Windows should now use v3.3.3.114. prolific usbtoserial comm port version 333114 driver

• Open Device Manager, right-click the Prolific port > Uninstall device – check "Delete driver software."
• Unplug the adapter.
• Run the 333114 installer as Administrator again.
• Reboot, then plug in the adapter.

• Check Driver Version = 3.3.114.0