Zip file for the Gigabyte GA-Z97N-WIFI, a mini-ITX Z97 motherboard, 579 KB. The name gives no details of the contents, so open the archive to see whether it holds firmware, a schematic or a boardview. For BIOS recovery, an SPI programmer is used to rewrite the flash chip, and the image size must match its capacity. Check the board revision printed on the PCB, and back up the existing firmware first so you keep the MAC address and serial data.
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 @schematicslaptop. 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