Only bit driver I have ever found that works with all the “Prolific” adapters is Version 3. Prolific does not sell cables with Prolific brand and packaging. Good Way Technology Co. How do I fix it? On the next windows, choose the second option “Look for a driver on my computer”.

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Prolific does not sell cables with Prolific brand and packaging.

Hey, but I can’t do that myself!!! Download drivers from Prolific site. Another windows appear, and vld the bottom option: It allow to inhibit the auto-update for a particular program or driver Prolific in our case. 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.

That means correct driver version usb vid 067b pid 2303 not installed.

USB Serial Adapter Drivers Page

Only bit driver I have pif found that works with all the “Prolific” adapters is Version 3. PL CheckChipVersion tool program. So, if you change usb vid 067b pid 2303 of connection, you should manually set the driver to 3. Indeed, when installing W10, the device driver for PL is the latest version.



Home Contact Support Knowledgebase Downloads. Run the installer program.

The “Driver Version” must say “3. This tool is for profs. Website Design by Alvitr.

And Windows 8, 8. As many people, you probably upgrade directly from W7 to W10, and sure, don’t know that this problem was already present with W8. And if you double-click on it, you will see: The “Driver Version” must say “2.

Please be warned that selling counterfeit products are illegal and punishable by civil and criminal courts according to the trademark, copyright, usb vid 067b pid 2303 intellectual properties laws and regulations. If it offers a choice to usbb the driver, then select to remove the current “bad” driver.

StanP12 Replied on December 16, So no matter how many times piid remove the driver files and reboot – the next time you insert the USB-To-Serial adapter, Windows installs the newest non-working version again.

PL USB to UART Bridge Drivers (Windows)

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. Sorry this didn’t help. Close the Sirf Demo software. The latest version doesn’t work anymore with old hardware, and you need to downgrade the driver. If you don’t have the old versions of drivers, you can tried to install them usb vid 067b pid 2303 the minidisc provided with your product.


PL2303HX Rev. D USB to Serial/UART Bridge Controller (Internal Crystal)

KB I have tested it and it work fine. Hi, Thank you for posting your query on Microsoft Community. Did this solve your problem?

Follow the steps from the wizard usn run the troubleshooter. Each time you turn your computer off, the latest driver is reloaded due to windows auto-update or if you unplug and plug again the device into USB port.

I would suggest you to run Hardware and device troubleshooter and check if it helps: