Archive for the Dell Latitude 3490 labelled fast display, about 5.9 MB in RAR form. The name likely points to firmware that gives a quick picture on power-up, but the exact contents are not described and should be checked after extraction. If it holds a BIOS image, use an SPI programmer, keep a backup of the original chip including service tag data, verify the board in hand matches the 3490, and ensure the image size fits the flash chip before writing.
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.
7-ZipWinRARThe Unarchiver (macOS)