Acer Aspire 5749 BIOS image, 4 MB in size; the trailing dashes in the name carry no further detail, so no board number or version is stated. The size matches a 32 Mbit SPI flash chip. Write it with an external programmer to recover a board that is dead after an update or stuck with no display. Compare the motherboard number and revision with the source before flashing, and save a backup of the original chip so you can restore it if the image does not suit.
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 @biosarchive. 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 →