Schematic for the ASUS PRIME B660M-A AC D4 desktop motherboard, provided as a PDF compressed in a RAR archive. The name does not give a revision number, so check the version listed inside the document against the one silkscreened on the board. Circuit diagrams like this help trace VRM phases, standby rails, DDR4 memory power and Wi-Fi module connections when diagnosing no-power or no-post faults. Extract the archive with any RAR-compatible tool and open the PDF in a reader that supports text search for net names.
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 @schematicslaptop. Enginerys does not host this file.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 28 Dec 2025 | Open file on RM Schematics |
| @schematics_bios | 27 Oct 2026 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.