USB-to-Serial Issues

These are USB-to-Serial issues. I’ve been utilizing my USB-to-Serial adapter for an extended period, but it unexpectedly ceased functioning yesterday. Upon inserting it, there are no discernible alterations in the Device Manager. Surprisingly, the device functions flawlessly when connected to another laptop.

USB-to-Serial Issues

It appears as though I may have inadvertently disabled my Communication Ports or encountered some other issue. Strangely, the Prolific USB-to-Serial Comm Port remains persistently inactive.

I made an attempt to resolve the issue by employing the “Add New Hardware” feature and installing the (new) Prolific drivers, but to no avail. Additionally, I experimented with the uninstallation and reinstallation of every Port and USB component within the Device Manager, yet still encountered no success.

The situation seems to mimic a cable or device malfunction, although I can confirm that it operates flawlessly on my alternative laptop. Furthermore, I do hear a notification sound when I connect it, albeit its absence from the Device Manager.

Lastly also see issues with the CP2102 driver as well as the PL2303HXA Driver Phased Out [Solved]



Follow these steps to attempt to resolve the issue:

  1. Open the Device Manager by typing “Device Manager” in the lower left corner of your screen.
  2. In the Device Manager, locate the USB to Serial Converter Settings. To do this, expand the “Universal Serial Bus controllers” list.
  3. Look for the “USB Serial Converter” entry and right-click on it to open the USB Serial Converter properties.
  4. Within the USB Serial Converter properties, navigate to the “Advanced” tab.
  5. Ensure that the “Load VCP” option is enabled in the Advanced tab.
  6. Click OK to save the changes and load the VCP driver.
  7. Now, disconnect the USB device from your computer.
  8. Reconnect the USB device to your computer.
See also  CP2102 driver


After following these steps, Windows 10 should recognize the device and load the Virtual Com Port Driver. If this procedure works, the issue should be resolved, and your USB-to-Serial adapter should function correctly again.

Lastly see FT232R Drivers in Different Operating Systems as well as Prolific USB to Serial Comm Port.



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