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From there just follow the prompts and you should be up and running in moments. Method 1: Download and install the PL2303 driver update from the Prolific website The website of Prolific releases the required drivers on its official website. What you need to do after installing the older drivers is go to the properties for the device in your device manager, go to Update Driver Software, Browse My Computer, then Let Pick from a List and select the older version of the driver and hit next. Prolific USB - to - Serial Comm Port Version : 3.3.2.105 27-10-2008 Prolific USB - to. Prolific Technology is a IC design house company and ASIC design service provider for USB Smart I/O (USB to UART, Card Readers, External USB Drive), Intelligent Green Energy Saving, and Mixed-Mode Hall Sensor solutions. In my case I didn’t even know I had a knock off but I downloaded the older drivers and installed them and voila, I was up and running!Īnd just another quick tip, since if you’re here you’ve probably already installed the newer drivers and your system will default to those each time you try to plugin the device. No.10-2, Lixing 1st Rd., Hsinchu Science Park, Hsinchu City 300, Taiwan, R.O.C. Open device manager by right-click Windows icon and choose it from the results. With a bit more digging I found out that this was a common error for knock-off Prolific chips as in recent driver versions they have been blocking cloned or pirated chips. It will help Windows 10 recognize the devices again and restart it. However I could not get it working on any of my personal computers or even my work computer.Īfter receiving the same error on each machine I started to think it wasn’t the device nor the computer but the drivers. Prolific USB to Serial Driver (Windows 11/10/8.1/8/7) By oemadmin Last Updated Mon, There a many USB to Serial devices branded under different names, but the majority of them have the Prolific chipset, and use the same drivers. The Windows driver installer contains both VCP and D2XX drivers.
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I recently dug an old PL2303MDL programmer out of a tackle box of electronics and tried to get it working so I could flash some Sonoff devices with tasmota firmware. Prolific USB to Serial Driver (Windows 11/10/8.