prolific usb to serial comm port driver windows 11

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:

If the device is installed properly, you will see 'Prolific USB to Serial Com Port.'.Click on the plus sign (+) next to 'Ports.'.Start -> Control Panel -> Hardware and Sound -> Device Manager.

Prolific usb to serial comm port driver windows 11