: This is a UL (Underwriters Laboratories) flammability standard. It certifies that the plastic and fiberglass materials used in the PCB will self-extinguish within a specific timeframe if they catch fire. Decoding the E89382 UL Number
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In many 14-inch and 15.6-inch laptops (notably older Acer Aspire models and some HP Pavilion notebooks), the LCD panel connects to the motherboard via a video cable. However, the power regulation for the LCD backlight (LED driver) is often handled by a small, elongated PCB attached to the back of the LCD panel. That small board is often the . : This is a UL (Underwriters Laboratories) flammability