RAR archive of roughly 12.4 MB for the Motorola Moto G8 Power, model XT2041. Contents are not specified in the name, though such packages typically hold service schematics or board layout pages. They let a technician trace battery and charging paths, locate filters and connectors, and check measurements when diagnosing a dead or short-circuited board. Unpack with WinRAR or 7-Zip, and confirm the XT2041 sub-variant on the phone matches the documents before replacing components based on them.
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 @esquemaseletricos. 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.