BIOS firmware for the Acer Extensa 4620 with board code MS2204, Intel version 1.81, with the extension apparently cut off from a longer name. The 1.00 MB size fits an 8 Mbit SPI flash chip. Rename it to .bin if your programmer software needs that, then check the image is a full dump before writing. Technicians use it to revive boards with corrupted firmware. Confirm the MS2204 marking on your motherboard and back up the original chip contents first.
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 @ComputerBIOSBinFile. Enginerys does not host this file.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →