Compact boardview archive of about 100 KB for an A78M-E motherboard, revision 1.03A, as the name gives. No brand is attached to the file, although the naming follows the style used for ASUS boardview releases; confirm against the board itself. Inside is a layout file for a boardview viewer such as OpenBoardView or FlexBV, used to locate components, follow nets and find measurement points while diagnosing a no-power or short condition. Match the revision printed on the PCB to 1.03A before relying on component positions.
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 @cynetitsolution. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.