PDF schematic for the MSI MS-7821 motherboard at revision 1.2, the board used on the Z87-G55. The 960 KB RAR archive opens in a standard PDF reader. The diagrams help trace the CPU VRM, memory power and standby rails and follow signals between the chipset and the peripherals. MS-xxxx is MSI's in-house board number. Make sure the board in hand is revision 1.2, since component placement and values can differ from the later 2.0 revision.
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 (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 19 Mar 2023 | Open file on RM Schematics |
| @cyberlanelectonik | 19 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 14 Aug 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.