BIOS image for a Dell OptiPlex 9020 in the mini-tower (MT) form factor, 8.00 MB in size, with the name marking it as the 8M portion. Desktop boards of this generation often split firmware across two SPI chips, so this image is meant for the 8 MB chip, while a matching 4M file covers the smaller one. Program it with an SPI programmer such as a CH341A after reading and saving the original contents, and check the chip capacity first, because an image that does not match the flash size will not fit.
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 @laptopbios21. 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 →