Generic archive called builds1 with no model, brand or board information in its name, so its contents can only be identified after unpacking. The 6.85 MB size could match firmware builds, tools or a set of dumps. Inspect each file, check headers and version strings, and compare any image size against your flash chip before use. If it holds BIOS or EC images, always back up the original chip with a programmer first, because flashing unidentified firmware can brick a working 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 @vinafix_bios. 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