ASUS A55BM-PLUS motherboard archive in RAR format, 354 KB. The board is a micro-ATX model with the AMD A55 chipset for FM2 socket APUs. Because the name does not list the contents, open it to confirm whether boardview or schematic files are inside. These help a technician locate components and test points, trace power rails during no-power faults and find the SPI flash before reflashing. Check that the PCB revision matches the documentation before use.
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 @boardview. 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.
7-ZipWinRARThe Unarchiver (macOS)