A saved BIOS image for what the name gives as a 640 G2, most likely an HP ProBook of that generation, though the brand is not stated. The word saved suggests it was read from a working machine rather than built from an update package. At 16 MB it matches a 128 Mbit SPI flash chip. Technicians write such a dump with a CH341A or similar programmer when a board is bricked or after a failed update. Read and keep the original chip contents first, and check the board model before you write it.
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 @biosfilebins. 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 →