RAR archive of 306 KB for the ASUS A88X-PRO, an ATX motherboard with the AMD A88X chipset and an FM2+ socket. The name does not reveal what files are included, so open it to check for a boardview or schematic. Such material is used to follow power rails from the ATX connector, locate shorted components and find the BIOS chip before reflashing it with an SPI programmer. Make sure the board revision on the PCB matches the documentation.
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)