Compressed RAR package, 342 KB, labelled R9550L with a V10 tag that probably indicates version or revision 1.0. Brand, board number and content type are not given in the name. It is likely a firmware image or small document set, but verify by extracting it with WinRAR or 7-Zip. Check that the model and hardware revision on the device you are servicing match before using the contents. If it turns out to be a flash dump, save a copy of the original chip first and confirm the file size equals the chip capacity.
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 @schematicslaptop. 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.