RAR archive for the Dell Inspiron N5010 marked as the Intel version, distinguishing it from AMD-based builds of the same model, which use different mainboards. The name gives no board number or revision, so check the documentation inside to identify the exact board. Service material like this helps with tracing power rails, following the power-on sequence and locating test points. Confirm that your machine has an Intel platform and that the PCB marking matches the title block before measuring.
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 @generalschematics. 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.