This is a LightBurn license key for GCode controllers (DIY / hobby). Itallows installing on up to two computers, PC, Mac, or Linux. The key will be emailed to you (this may take up to 24 hours), and can be applied to the trial version to unlock the software. You can read more about the license here.
The GCode version supports Cohesion3D, Smoothieware, Grbl, Marlin, and Grbl-LPC based controllers. (Note, if you have an Emblaser from Darkly Labs, please purchase your LightBurn license directly from them)
Please use the trial period to test it with your hardware to be sure it will work for you.