Compressed RAR package for the Gigabyte GA-6VEML desktop motherboard, revision 1.0. The file name gives no detail about what is inside, but at under a megabyte it most likely contains a schematic or service drawing for this board. Such documents help when tracing VRM power stages, checking the clock and reset lines or finding which part on a rail is shorted. Gigabyte prints the revision on the PCB near the expansion slots, so check that it reads 1.0 before following component values or pinouts from this material.
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.