Compressed user manual for Samsung Auto Backup software, version 2.0, packed as a 3.26 MB RAR. SPA appears to be a Samsung product-documentation prefix. Auto Backup was bundled with Samsung external hard drives and handled scheduled and real-time file backup. The guide explains installation, backup configuration and restore steps. It is software documentation, not a circuit diagram, so it helps when a customer's backup setup needs restoring after a drive repair or replacement, rather than with board-level work.
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 @generalschematics. 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.