A schematic diagram for Dell hardware (board LA-C621P, LA-C641P). Shared as “AFSDell_Latitude_E520_,E5470_,E5570_Precision_3510_LA_C621P_LA_C641P.pdf” — a .pdf file, 2.24 MB.
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 @afsschematicfree. 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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)