Word document in Russian, 225 KB in DOCX format, containing instructions for using tserver, according to its name. The file does not describe a specific motherboard or device, and the name gives no further detail about the software version or purpose. It is likely a user guide for a tool used in a repair workflow, and opens in Microsoft Word, LibreOffice or another DOCX-compatible editor. Read it before setting up the tool, and check that the described version matches the software you actually have installed.
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 @videocard_notebook_resistance. Enginerys does not host this file.