Boardview for the ASUS Z170-DELUXE motherboard, revision 1.03A, packed in a 7z archive. The (2) in the name suggests a duplicate copy of the same file, and its size matches another upload of this boardview. Once extracted, the layout can be opened in a viewer such as OpenBoardView, FlexBV or Boardviewer to find components, measure nets and locate test points while diagnosing shorts or missing power rails. Confirm that the PCB revision silkscreen reads 1.03A, because part locations may differ on other revisions.
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 @boardview. Enginerys does not host this file.
How to open a .7z file
High-ratio compressed archive, often used for large BIOS collections.