Firmware image for the ASUS X401U laptop, labelled NEW 313, which most likely refers to BIOS version 313, though the name does not say so explicitly. The 4 MB size corresponds to a 32 Mbit SPI flash device. Such dumps are used to reprogram the chip directly with a programmer when the BIOS is corrupted or a failed update left the board dead. Back up the existing chip before erasing it, check that its capacity matches this image, and verify the board version against the PCB markings.
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 →