So, if you change place of connection, you should manually set the driver to 3. Installer program will not run on early Windows 7 or Beta versions. Type troubleshooting in the search bar, click on troubleshooting. This work fine, but looking at the configuration panel, you will then notice that there is an error code 10 and the driver is not working properly. If it offers a choice to remove the driver, then select to remove the current “bad” driver. The only problem with it, is that, it reload the latest driver when you plug the device on a never used USB port. Good Way Technology Co.

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For older cables purchased prior to October, When you plug prolifoc device into USB, it is well recognized by W10 and it try to load the Prolific driver.

Here is the driver with the solution!! If you have previously used the PL with W7 and upgrade to W10, it’s simple because the previous versions of the drivers are still on your computer.

Prolific Technology Inc. (USB to UART / RS / Serial)

This tool is for profs. Main cause of this issue is because the device you own contains a counterfeit “Prolific” chip China clone. In reply to OmarGimenez’s post on November 22, Unfortunately this decision also renders all earlier adapters inoperative. Prolific recommends following vendor cable brands: This confirms you need to install correct driver file.



Installer program will not run on early Windows 7 or Beta versions. The latest version doesn’t work anymore with old hardware, and you need to downgrade the driver. This article was helpful. You must follow ever step in the process in exact prolific usb 2.0 to com device. One of the common reasons that software may not work as expected with a USB-Serial adaptor when the devcie is properly installed, is many older programs and even some new ones only support a limited number of COM ports e.

Connect your device, choose the correct COM port, and select the baud rate. For more informations and where to download this tool, take a look at this article: You can check it, using prolific usb 2.0 to com device configuration panel: I don’t want to send my devices to trash because they are too old less than a year! 2.00

Click the “Advanced” button. The only problem with it, is that, it reload the latest driver when you plug the device on a never used USB port.

Where to Buy

Launch this program, it will install the driver. The “Driver Version” must say “2. I have tested it and it work proliric. Thanks for your feedback, it helps us improve the site.


However prolitic you didn’t have a previous driver installed that worked – you’ll have to go through the process of removing any PL driver installation programs, the actual driver files, and the information.

If your adapter was working prior to going to Windows Update, you can “roll back” to the previous installed driver and all will be well once again.

If for some reason the above driver does not work, try one of the following: I would suggest you to run Hardware and device troubleshooter and check if coom helps: And it addresses issue of: Next time, the driver remain to 3. If you don’t have the old versions of drivers, you can tried to install them prolific usb 2.0 to com device the minidisc provided eevice your product.

Mohammed Yaseer Replied on August 16, After selecting the desire port number, click “OK.

In the meantime action according this guideline was successful: