Small 65.1 KB ZIP labelled EC, most likely holding embedded controller firmware. The name gives no brand, model, board number or chip type, so check the contents before use. EC firmware runs the keyboard controller that handles power-on, charging and fan control. On some laptops it sits in a separate small flash chip, on others inside the main BIOS image. Read and back up the existing chip with a programmer first, and confirm the EC chip model and image size match.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @vinafix_bios. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →