Contents1 Electric warning2 Adding more electronic parts3 Stop/comm. errors4 Convert from digital to analog5 Tilt your PSU6 Install a mA-meter7 Information about USB-hubs8 Information about the PSU These machines are not always good, there is fixes to do before you plug it to your wall outlet. Check out our articles in the electronics category to fix, upgrade or just learn more about your K40 laser cutter/engraver Electric warning The laser machine has deadly electric parts inside, read this before connecting it to live power! Adding more electronic parts Adding more parts, lights and similar needs som special attention. Read up here on how! Stop/comm. errors If your machines just stops half way, or have communication errors. Read more here Convert from digital to analog Convert your digital panel to a analog potentiometer setup. This will help you with more accurate power settings. Tilt your PSU Tilt your power supply to use air from outside your machine to cool the electronics. Install a mA-meter The best upgrade you can do to your machine is to install a mA-meter! Information about USB-hubs If you plan to use a USB-hub between your computer and laser – read this!. Information about the PSU Everything you need to know about the 40w stock power supply ADVERTISMENT Time for a new set of optics for your laser machine? Lens & mirror kits starting at €49 Quick delivery in EU with stock in Sweden! Check out Hawklaser spare & upgrade part store here!