BIOS file for the Acer Aspire 5740, a compact 128 KB image. That size is far below the main BIOS of this Intel platform, so it is probably the embedded controller (EC/KBC) firmware or a partial region. Confirm which chip it belongs to before using it. Programming the wrong device with it will brick the board, so read the original chip first, note its capacity, and only write an image whose size exactly matches the target.
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 @abgm_manutencao_bios. 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 →