IPM61-TB motherboard package in zip format, 3.68 MB, with no revision or content list in the name. Boards named this way are typically OEM desktop boards supplied in prebuilt systems, and the size suggests a BIOS image for the onboard SPI flash. Technicians use such dumps to revive a board that powers on without video after a failed update. Check the board marking first, back up the existing chip contents, and make sure the image length equals the flash chip capacity before writing with a programmer.
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 @laptopchiplevelrepair. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.