Small 229 KB RAR archive holding AMIUCP version 1.07, an AMI utility for working with AMI Aptio BIOS images, typically used to view and edit string and setup data inside a firmware file. Technicians use such tools when modifying or inspecting a BIOS image before programming it onto the flash chip. Only work on a copy of the image, and keep an untouched backup of the original dump read from the SPI chip with a programmer, since an incorrectly edited image can leave the board without POST.
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 @generalproblemsolved. 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.