VAR-SOM-MX6/VAR-SOM-6UL/VAR-SOM-MX8/VAR-SOM-MX8X/VAR-SOM-MX8M-MINI/VAR-SOM-MX8M-NANO/VAR-SOM-MX8M-PLUS are pin to pin compatible and run with the Symphony-Board.
For hardware reference please see the VAR-SOM-MX8/Hardware/Symphony-Board/ directory in this FTP server.