Prolific Usb To Serial Comm Port Version 32 00 Download |verified| 2021 Jun 2026

Many users who bought inexpensive USB-to-serial adapters from Amazon, eBay, or AliExpress found that after updating to Prolific’s official 2021 driver, their adapters stopped working. Prolific’s official stance: “Use only genuine Prolific chips.” This left consumers with two choices:

Standard manufacturers like Dell or Lenovo provide newer versions (e.g., v5.x), but the specific 3.2.0.0 version is typically sought for its legacy compatibility. Installation Steps : Disconnect your USB adapter from the PC. prolific usb to serial comm port version 32 00 download 2021

| Error | Solution | |-------|----------| | | You have a counterfeit chip, or Windows forced a newer driver. Reinstall with driver signature enforcement disabled (hold Shift while clicking Restart → Troubleshoot → Startup Settings → Disable driver signature enforcement). | | Code 31 (Driver is not installed properly) | Run the installer in Windows 7 compatibility mode (right-click → Properties → Compatibility → Windows 7). | | COM port number too high (>16) | Open Device Manager → Ports → Advanced → Change COM port number to COM3 or COM4. | | Driver disappears after reboot | Disable Windows Update driver search via Group Policy: gpedit.msc → Computer Config → Admin Templates → System → Device Installation → Specify driver source. | | Error | Solution | |-------|----------| | |

: Highly recommended for programming cables; provides direct links to 3.2.0.0. | | COM port number too high (>16)