RAR archive for the Foxconn 661M07 desktop motherboard at revision A, catalogued under ECS. The model code points to a SiS 661 family board; the contents are not named, but the small 791 KB size suggests a schematic. Technicians rely on such diagrams to locate the CPU power stage components, follow standby voltages and check signals during no-boot diagnosis. It sits close to the 661M08 in numbering, so be sure the exact model and revision printed on your board match this file.
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.
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The same file was posted more than once. If one link is dead, try the next.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.