RAR archive of 844 KB for the ECS J10IL1 board, with no revision or contents stated in the name. Extract it to see whether it holds a schematic, boardview or firmware. Schematic pages let a technician trace supply rails, locate MOSFETs and controllers, and work through a no-power fault step by step. A firmware image should only be written after the original SPI flash is backed up and the image size checked against the chip. Since no revision is given, compare with the PCB markings carefully.
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 @cyberlanelectonik. 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.