Listed under schematics, this 188 KB PDF is named for the JEDEC part 2N5550 with an RE suffix whose meaning is unclear. No laptop, board code or revision is given. The content is most likely a datasheet covering package drawing, pin assignment and electrical limits of the discrete device. It can be opened in any PDF reader and used to confirm orientation and ratings when fitting a replacement or testing in circuit. Verify the component marking first, as the name alone does not identify the manufacturer.
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 @cyberlanelectonik. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.