Common in more industrial-grade machines, these use proprietary hardware, firmware, and software. They are usually enclosed in a plastic case, and often have a separate LCD display panel with buttons. If your machine is a CO2 laser in a metal enclosure and has an LCD display, chances are you need the DSP version. Supported control boards
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The DSP version of LightBurn also supports all devices in the GCode base license, so if you have both types, you only need the DSP license.