Original EC firmware for a W540 laptop, packed into a 2.76 MB RAR archive. The embedded controller handles power-on sequencing, battery charging, keyboard and fan control, so a damaged EC image can leave a board dead or failing to charge. The name gives no chip type or board number, so inspect the extracted image size and compare it with the flash chip on your board before programming it with an SPI programmer. Save a backup of the current chip contents first, in case the dump does not suit your revision.
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 @SCHEMATICWORLD. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →