Boardview for an H81-PLUS motherboard, packed as a ZIP archive of about 105 KB. The FZ tag usually refers to the FZ boardview format, which opens in viewers such as OpenBoardView or FlexBoardView. The name gives no brand or PCB revision, so compare the model and revision silkscreened on the board before trusting pin locations. A boardview like this helps locate components, trace nets between parts, find test points and work out where a short to ground sits on a desktop LGA1150 board.
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 @cyberlanelectonik. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.