Acer Extensa 5630Z BIOS in ROM format, 2.00 MB, labelled with board code MS2231 and a note that it worked on a 5230E as well. The size corresponds to a 16 Mbit SPI flash chip. Such an image is used to revive a board that will not post after a bad flash or chip corruption. Since the cross-model note relies on shared hardware, read the original chip first and keep that backup, check the board marking against MS2231, and verify the programmed contents after writing.
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 .rom file
A BIOS image as shipped by the vendor (commonly AMI) — often the BIOS region only, without descriptor or ME.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →