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. There is a tutorial here on installation and other functions of the chip. These programmable chips are used for small projects and some devices that have been converted for USB. 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. This driver will let you use USB to serial programmable devices with the ch340g/ch340c/ch314 chipsets. 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? rs232 to usb converter driver for windows 10 free download. pl2303 windows driver download usb to uart rs232 serial. 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. These converter cables have either a Prolific Chipset built-in (Drivers below) or a FTDI chipset, for those driver look here: FTDI RS232 Drivers. 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.Please refer to the below video explanation for a better understanding. You can use the USB-to-Serial converter for your project now. After the installation, now you can see the COM port number in the device manager.Right-click the PL2303_Prolific_DriverInstaller_v1.12.0.exe and Run as administrator. Please refer to the below image.Once you uninstall the driver, now download the file PL2303_Prolific_DriverInstaller_v1_12_0.zip and extract it.Then check the box “ Attempt to remove the driver for this device” and click Uninstall.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. Right-click the PL2303TA DO NOT SUPPORT WINDOWS 11 OR LATER, PLEASE CONTACT YOUR SUPPLIER and click Uninstall device. No.10-2, Lixing 1st Rd., Hsinchu Science Park, Hsinchu City 300, Taiwan, R.O.C. First, uninstall the driver that you have installed now.Prolific PL2303TA USB to Serial Windows 11 Problem If you are also facing this issue, then this article (Prolific PL2303TA USB to Serial Windows 11 Problem) will help you.