www.longer3d.com support@longer.net
showing Grbl firmware version. On the bottom-right of the
LaserGRBL interface it shows“Status: Idle”
If no ports are listed in the drop-down, it means that no engravers
were found, which could mean that it is not plugged in correctly,
isn't powered, or the PC is missing a driver. Please click Tools menu
to Install CH340 Driver from LaserGRBL software.