This is a UL (Underwriters Laboratories) flammability rating. It indicates that the plastic materials used in the PCB will stop burning within 10 seconds and won't drip flaming particles.
Because this code appears on thousands of different motherboards across brands like , searching for "CM-4 94V-0 Boardview" will often yield generic results that don't match your specific device. How to Find the Correct Boardview cm-4 94v-0 boardview
If a resistor is burnt to a crisp and you can’t read its value, the Boardview tells you exactly what part belongs there. This is a UL (Underwriters Laboratories) flammability rating
Understanding CM-4 94V-0 Motherboards and Finding Boardview Files How to Find the Correct Boardview If a
This is usually a manufacturer’s factory code or a specific type of laminate material used by the PCB fabricator (often associated with companies like Chicony or HannStar).
If you are currently staring at a board with this marking and can’t find a schematic:
It identifies which pins are Ground, Power (19V, 3V, 5V), or Data, preventing you from shorting out the board during testing. Tools Needed to Open Boardview Files