Archive named only for the Dell Latitude 5590, with no board number, revision or content type in the name. It may contain a BIOS dump, a boardview or schematics, so extract it and identify the files before relying on them. A technician would use firmware from such a pack to reflash the SPI chip, or diagrams to trace power and signal paths. Match the board code on the PCB with the files inside, and always keep a copy of the original flash.
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 @SCHEMATICWORLD. 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)