ZIP archive of 66.8 KB named for Wistron board 17809-1, with a GR suffix in the name whose contents are not described, so open it to see what it contains. Wistron five-digit project numbers such as 17809 appear on Acer Swift boards, and small files of this size often hold boardview or EC data. Inspect the files before use and identify which program opens them. Make sure the board number and suffix printed on the PCB match exactly, since 17809-1 and 17809-1M variants may differ.
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 @notebookschematic. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.