BIOS firmware for the Acer Aspire 5520G, packed as a 534 KB RAR, so the image inside is probably about 512 KB. No board number or version appears in the name, so match the motherboard code on the PCB before use. Technicians write such dumps to the BIOS flash with a programmer when a board shows power but no display, or after a failed update. Make sure the image size matches the chip capacity, and save a backup of the original contents before erasing.
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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →