ASUS ROG Maximus X Hero (Wi-Fi AC) motherboard boardview at PCB revision 1.01A, in a 398 KB RAR archive. This is the variant of the Maximus X Hero with onboard Wi-Fi, so make sure it matches your board and revision before trusting the layout. A boardview viewer such as OpenBoardView or FlexBV shows component positions, net names and pin connections, which helps when measuring the CPU VRM, tracing standby rails, locating test points and finding the component behind a short.
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 @BoardSchematic. 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.