Just got my K40 machine today, but without CD and can’t get the USB to work, anyone knows?
Here are the contents of the CD: https://www.dropbox.com/s/86ib5q5i9jvk4xs/Laser%20Cutter%20-%20Easy.zip?dl=0
And the USB is just a key which allows the machine to work. Think of it like a key to your front door… except in digital form.
Hope this helps!