This is a UL (Underwriters Laboratories) flammability rating . It signifies the board material will self-extinguish within 10 seconds if ignited.
While this marking appears on millions of boards, it is most frequently found on: cm-4 94v-0 schematics
: Circuits that drop the 12V/19V input down to 1.5V, 1V, or 0.9V for specific chips. Search Repositories : Use your Mainboard Model to search specialized schematic databases: (Search for "HannStar MV-4 schematic"). DIY Laptop Repair Forums for troubleshooting guides. BadCaps.net for BIOS and schematic dumps. Basic Maintenance Tips Regular Cleaning This is a UL (Underwriters Laboratories) flammability rating