Dell repair archive labelled 5050, likely referring to a Dell model number, in a 1.05 MB RAR. The name does not state whether it contains a BIOS dump, schematic or other service material, nor any board number. Unpack it and identify the contents before use, then confirm the board number printed on the PCB matches the documents inside. If it holds firmware, check the dump size against the flash chip, back up the original chip, and write it with an SPI programmer while the board is unpowered.
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 @hrtechno. 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.