Please install the corresponding PL2303 driver to support Windows 11 How to install PL2303 (Prolific) driver on Windows 11Īfter connecting a device with a serial port with the computer via the Prolific PL2303 cable, some users have received the following error message: In this article, we will show you how to install PL2303 (Prolific) driver on Windows 11. If you encounter this problem, you have to install the required Prolific USB-to-serial driver from the manufacturer’s official website. Some users have experienced such an issue while connecting their computer to a device with a serial port via the Prolific USB-to-Serial adapter cable. In some cases, Windows fails to install the compatible driver and displays an error on the screen. Hence, drivers are necessary for the proper functioning of devices connected to your computer. Drivers let an operating system know what type of device is connected to it. When you connect a device with your Windows computer, Windows automatically installs its driver. Part #'s SW-1314, SW-1318, and other FTDI based adapters:Prolific PL2303 is a USB-to-Serial adapter cable that lets you connect your computer to the devices with serial ports, like a PLC (Programmable Logic Controller).
Plug the USB-to-Serial Adapter cable into your USB port.Follow the prompts to extract and run the dmg file. Click here to download the driver for MAC OS X.USB to Serial Support Mac How to Install the Driver: Part # SW-1301 and other Prolific based adapters: If you are having problems with the USB-to-Serial Adapter in Windows that this page does not address, please contact us at or call (800)709-1345 between 7 AM - 6 PM MST. You may have to run the software that came with your device to make it rescan the COM ports. Notice that the device will show up as being on the same COM port that it was before (i.e., COM5), but will show up on the new port if you close the Device Manager and open it again. Pull down the scrollbar on the bottom, left side and select COM 1, 2, 3 or 4 (NOTE: Choose one that does not say "in use" next to it).Right click on the "Prolific USB to Serial Port" and click on Properties.How do I change the COM port on my USB to Serial adapter?
If the adapter is installed on COM5, a device with such a limitation will not work until the COM port is reassigned to COM1 - COM4. would not work with a USB to Serial adapter when everything appears to have installed fine is that some devices will only scan a limited number of COM ports.įor instance, it is very common for a PDA to have a limitation of scanning the first four (or sometimes two) COM ports. The most common reason that a device such as a PDA, GPS, cell phone, etc. Troubleshooting The driver is installed properly, but the device is not working:
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