This article was helpful. If you want to delete it – use the Windows “Uninstall a Program” or “Add or Remove Program” feature – however this will also uninstall the driver itself. In the Properties Window, Click on “Driver”. Or you may get no error at all, but your device will still not work. If it offers a choice to remove the driver, then select to remove the current “bad” driver. The “Driver Version” must say “2. Prolific does not sell cables with Prolific brand and packaging.

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Prolific advices end-users to only purchase vendor branded cable products with company name contact information for service and support. Even vendors selling their “USB to Serial” adapters are baffled.

Portable USB to DB9 RS 1m Cable with PL Chipset Black – Ugreen

That means correct driver version is not installed. Prolific will take proper and severe actions to cease and confiscate these counterfeit products. Issue will also may show messages like this: To solve this intellectual infringement – original Prolific company modified their newest drivers to render the counterfeit adapters unusable.

And Windows 8, 8. This article was not usb to serial adapter pl2303. Below installer program will remove all of the incompatible drivers — make a change so that Windows seriaal never update the serixl without your approval — and install the Version 3.

Please be warned that selling counterfeit products are illegal and adapetr by civil and criminal courts according to the trademark, copyright, and intellectual properties laws and regulations. Then run the installer again to install the correct driver. If your adapter was working prior to going to Windows Update, you can “roll back” to the previous eerial driver and all will be well once again.

We issue this warning to all our customers and consumers to avoid confusion and false purchase.

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If you want to delete it – use the Usb to serial adapter pl2303 “Uninstall a Program” or “Add or Remove Program” feature – however this will also uninstall the driver itself. The “Driver Version” must say “2. Or you may get no error at all, but your device will still not work. What worsens this issue is that there are many “Prolific Driver Removal Tools” that do not work properly.


Unfortunately this decision also renders all earlier adapters inoperative. Or contact our worldwide distributors for other cable product reference and chip samples.

You must follow ever step in the process in exact order. Home Contact Support Knowledgebase Downloads.

USB Serial Adapter Drivers Page

Prolific also prohibits the distribution of addapter PL drivers including download links without written permission from Prolific. Usb to serial adapter pl2303 if 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.

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In summary, this article is for: Main cause of this issue is because the device you own contains a counterfeit “Prolific” chip China clone. Yo bit driver I have ever found that works with all the “Prolific” adapters is Version 3. Prolific recommends following usb to serial adapter pl2303 cable brands: Notice in above picture, Code 10 error. The “Driver Version” must say “3. Counterfeit IC products show exactly the same outside chip markings but generally are of poor quality and causes Windows driver compatibility issues Yellow Mark Error Code 10 in Device Manager.

So no matter adaprer many times you remove the driver files and reboot – the next time you insert usb to serial adapter pl2303 USB-To-Serial adapter, Windows installs the newest non-working version again.

Plugable USB to RS DB9 Serial Adapter (Prolific PLHX Chipset) – Plugable

Available forum solutions to this problem are half-baked. This article was helpful. In the Properties Window, Click on “Driver”.

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