ASUS P8Z77-V LK2 boardview, revision 1.00, stored as a 113 KB FZ file. The format is read by OpenBoardView or FlexBV, where clicking a pin highlights every point on the same net, a fast way to find where a missing voltage stops or which part shorts a rail to ground. It shows component references and placement but not circuit values, so a schematic remains useful for expected voltages. Check that your motherboard is the LK2 variant at revision 1.00, since other P8Z77-V models use different layouts.
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 .fz file
Compressed and encrypted boardview used for ASUS, ASRock and Pegatron boards.