I recently got a new laser, and I am having trouble getting lightburn to recognize it. I have a smaller laser just like it that works fine on lightburn. They are CH340 lasers that I bought off of Amazon. I run the smaller laser as a GRBL 1.1 or higher, and that’s what the big laser should run as too. When I plug it into the computer, I can see it showing under devices on the settings of the computer, so its not the USB cord. Also, I can make it work on Engraver Master. I tried to add the laser manually, and it recognizes that there is something plugged into COM5,but when you click through the settings (choosing GRBL, setting size, home. etc), it just says waiting for connection on the control panel. Any ideas that might help?