RAR archive named R7000L-64TC, 248 KB. The name carries only the model-like code and suffix 64TC, whose meaning is not stated, with no brand or board number. Its contents are unknown until you extract it, so check whether you have a schematic, a boardview or a firmware file. Compare it with the related R7000 archive, as they may cover different hardware variants. Verify the board markings match, and if it holds firmware, back up the original chip before programming.
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 @cyberlanelectonik. 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.