RAR archive labeled E49 with Wistron motherboard number 11310-1 and PCB part 48.4TK04.011. The name does not state the brand or say whether it holds a BIOS, schematic or boardview, so open it and check the contents. The 2.92 MB size fits a firmware dump. Wistron uses the five-digit dash-revision board number and 48.4xxxx part codes. Match the revision on the PCB before use, and if it holds a BIOS, back up the original chip before flashing.
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 @CLRINDORE. 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.
7-ZipWinRARThe Unarchiver (macOS)