
If you see more than one, be sure to choose version 3.4.62.293 from that we just installed, then click "Next" If the "Show compatible hardware" checkbox is checked, you should see at least one Prolific USB driver.
In the next screen, choose "Browse my computer for drivers", then choose "Let me pick from a list of available drivers on my computer". Right-click on the Prolific port, and choose "Update driver". If you have more than one, ensure you disconnect any other programming cables or devices that may come up as a Prolific device, to ensure you only update the driver for the desired device. You should see a "Prolific USB-to-Serial Comm Port" device with a COM port number next to it. Navigate to the Ports (COM & LPT) section and expand it to view the COM ports on your computer. Plug in your USB cable to an available port on your computer. Open Device Manager by clicking on the Windows Start button in the bottom left of your toolbar, then type "Device Manager" in the search box. Follow the instructions in the installer to install the Prolific driver version 3.4.62.293 from on your system.
Extract the RAR archive using a tool like WinRar or 7-Zip to a folder on your computer and run it, or just double-click on the. Download the Prolific USB Driver package here (also available on the product listing page for the repeaters): Download Prolific USB Driver. The default driver version that Windows Update will install is typically too new to work with the chipset in the USB cable. The USB Driver for the programming cable included with the RT97 and RT97S repeaters may need to be manually installed depending on your version of Microsoft Windows.