Schematic in PDF format for the ASUS Q170M-C desktop motherboard; the RG tag in the name is not explained. The circuit diagrams help a technician trace power rails, standby circuits, VRM phases and reset signals when the board will not power on or shows a short. Pair it with the matching boardview to find the physical location of parts named on the drawings. Confirm the board revision printed near the slots matches the schematic before taking component values as final.
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 @cynetitsolution. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.