Windows 10 Pro installation image, version 1909, build 476 by the name, in a 1.11 GB ISO. The size is smaller than a standard full image, so it may be a trimmed or customized build, and the name does not say what was changed. It can be written to a USB stick with Rufus or a similar tool for test installs or checking hardware after repair. Verify the image source and integrity, and use a properly licensed official release for any system you return to a customer.
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 @laptopschematics. Enginerys does not host this file.