Trouble Connecting DK3 Mixer in Windows 11

In Windows 11, when connecting DK3 mixer by USB cable to CAVS karaoke player, the required “Prolific USB-to-Serial Comm Port” driver may be found as incompatible in the Device Manager with error message “Please install corresponding PL2303 driver to support Windows 11 and further OS”. To fix this error, follow the steps below.
1. In the Device Manager, right click on the error message and select “Uninstall Device”.
2. In the popup “Uninstall Device” window, check “Attempt to removethe driver for the device”.
3. Click on “Uninstall” button to begin unstalling. When done, you will no longer see the the error message.
4. Next download the PL2303 driver from the following link “”
5. After download, double click on “PL2303_Prolific_DriverInstaller_v1.12.0.exe” to run.
6. In the popup “PL2303 Driver Installer Program” window, select “Remove” and click on “Next”, followed by “Yes”, and “Finish”. You need to first remove the Prolific driver.
7. Next, again double click on “PL2303_Prolific_DriverInstaller_v1.12.0.exe”. Click “Yes”, “Next”, and “Finish” to re-install the PL2303 driver.
8. Go to Device Manager. Unplug the USB cable from the DK3 mixer and plug it back in. Now go to the Ports in the Device Manager and you will see the “Prolific USB-to-Serial Comm Port”.
9. Note the comm port number of the Prolific driver and fill the Mixer setting under Tools and Mixer.

Category: DK3 Mixer