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:
Click on the plus sign (+) next to "Ports.".Start -> Control Panel -> Hardware and Sound -> Device Manager.
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