It is commonly used in Lenovo models like the IdeaPad Y510 and Z510, as well as certain HP , Dell , and Medion laptops.
This is just a UL flame rating; it does not indicate the board's technical specifications or performance. "J MV-4" Variations: There are also "K MV-4" and "J MV-6" boards. They are E89382 Hannstar J Mv-4 94v-0 Boardview