Loaded Lightburn. Loaded GBRL. Connected computer to TS2 10W. Turned on TS2. Started LB from shortcut. LB loaded. Device dialog box opened up with 3 choices. I chose find my laser. Dialog screen finds GRBL. Clicked on GBRL and got to “you are done” then clicked finish.and got "GRBL M3 V1.1 or later) Gcode, Clicked and got USB Serial (C)M3) box with USB Serial CH340. Went back to LB startup page and the “Device” box is still there with no way o exit it to the underlying LB program. How do I get out of the devices box to use LB. I am using windows 11 home
Welcome and thanks for posting. If willing, we would like to see what you are experiencing. Please share a screenshot of your entire screen for context. 
This screen is where your problem is. You’re running a low resolution monitor, so the “OK” button is hidden under the Windows Task bar. I suspect you’re hitting the X in the upper right hand corner to close the window, which doesn’t save the device you added. If you can grab the window and move it up, so you can hit the “OK” button, it will save the device and you can move on:
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Genius, shear genius. That process solved my problem, Although I could not grab the bottom portion of the dialogue box, it was hidden by my task bar I removed the task bar and lo and behold there was the OK. Thanks so much for this forum and your help
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