A 4 MB binary carrying only the flash part name W25Q32, a 32 Mbit Winbond SPI NOR chip, which explains the file size; no device, brand or board number is given. It is most likely a full read of a BIOS chip of that type taken with a programmer. Without knowing the source machine it is risky to flash, because BIOS images carry board-specific settings and sometimes serial data. Use it only when its origin can be confirmed, keep a backup of the chip you intend to overwrite, and check that the board revision printed on the PCB matches.
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 @bios_laptop. 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 →