ZIP package of 734 KB for a board named M4A78LT-M-LE, a desktop motherboard style designation with an LE variant suffix. The contents are not specified in the name, so unpack and identify them before use; a file this size often contains a BIOS image. Match the exact model and suffix printed on the PCB. For reflashing, read and back up the existing SPI chip with a programmer and verify that the dump size fits the chip.
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 @laptopchiplevelrepair. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip