Prolific USB-to-Serial (COM) Driver — Version 3.3.3.114: Overview, Installation, and Troubleshooting

Summary

  • Adapter enumerates but communication fails (garbled data, wrong baud)
    • Right-click the appropriate .exe file > Run as Administrator.
    • Follow the on-screen prompts. Do not plug in the USB adapter until the installer finishes.
    • After installation completes, restart your PC.

    Security: Only download drivers from reputable community forums or hardware manufacturers to avoid malware.

    The primary function of this driver is to bridge the communication between a computer's USB port and a serial device, such as GPS receivers, barcode scanners, or industrial equipment. Prolific Usb-to-serial Comm Port Version 3.3.3.114 Download

    Hardware Compatibility: Supports Prolific PL2303 H, HXA, X, EB, and G series chips. Why This Version is Used