ASUS X553MA BIOS image, apparently version 211 judging by the number in the name, provided as an 8.00 MB binary. The size corresponds to a full 64 Mbit SPI flash read including all regions. A technician would use it to recover a board that no longer posts or to replace firmware after a failed update. Before programming, verify the motherboard model and revision on the PCB, save a copy of the existing chip, and check that the chip capacity matches the image size.
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 @biosbigarchives. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →