Repair guide archive for the ASUS Strix H270F Gaming motherboard, based on the Intel H270 chipset, 1.47 MB in RAR format. Contents typically include the power-on sequence, rail voltage tables and annotated test points for checking VRM, memory and PCH supplies. A technician uses it with a multimeter to find a missing rail or shorted component on a board that stays dead. Open it with WinRAR or 7-Zip, and compare the PCB revision silkscreen against the guide before replacing anything.
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 @ZINFOSERVICECHANNEL1. 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.