Ask for support or advice if you are not sure about a modification you are planning to implement.

Regularly check that connectors are fully seated and that no evidence of overheating or melting. Search for scratches, bulges, sharp angles all along the wires of your machine.

Order/install hardware and software from trusted and known vendors or manufacturers.

Upgrade your firmware to latest stable version.

Clean dust and plastic parts on and around your printer.

Test the firmware safety features using our guide here: Checking Firmware Safety.