Conection problem

I have problem to conect lightburn and MKS DLC 32 v2.1 its olvays a masage:potr fail to open alrey in use.
i doo new WIN 10 and new BIOS its same on all usb ports ist recognize bat no conection.

Make sure no other software is open and holding onto a connection when you try to connect using LightBurn.

You may need to install a driver, available here: CH340 Drivers for Windows, Mac and Linux

You may also need to close LightBurn, turn your laser off and on again, restart LightBurn, and then manually select the correct COM port from the drop down menu in the Laser window.

You’ll see a response in your ‘Console’ window when you’ve selected the correct port.

If you’re still unable to connect, make sure your USB connection is firmly seated, and try a new, high quality USB. If you’re using any USB hubs or extenders, take them out of line.

Connection Issues - LightBurn Software Documentation

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