Raw binary named KC45 with no model, brand or board number stated, so its target device cannot be confirmed from the name. At exactly 512 KB it matches the capacity of a 4 Mbit SPI chip, the size typical of EC or keyboard controller firmware or older BIOS images. It could be written directly with a programmer after a hex-editor check of its contents. Only use it when you are certain it belongs to your board, keep a backup of the original chip, and confirm the chip is 512 KB.
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 @laptopdesktopbiosbin. 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 →