Tiny plain text note of only 77 bytes titled cap to bin, most likely a short instruction or command for converting an ASUS CAP capsule BIOS file into a raw BIN image. The name gives no model, board or version. ASUS CAP files carry a header in front of the flash image, and stripping it is a common step before writing the image with an SPI programmer. Open it in any text editor. Check the resulting image size against the flash chip and keep a backup of the original chip contents first.
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 @boardview. Enginerys does not host this file.