Archive covering the MSI-built MS-7825 board supplied to Lenovo as the IH81M, revision 0E, in a 1.38 MB RAR file. The IH81M name points to an H81-based OEM board used in Lenovo desktops, while the MS-7825 code shows MSI as the actual manufacturer. The contents are not named, so open it to see whether schematics or boardview data are included. Check that both the MS-7825 number and rev 0E on the PCB match, then use it to follow standby rails, power sequencing and front-panel connections.
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 @IT_SERVICE_WORLD. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.