PDF schematic for the IPIMB-PV board, supplied as a 1.99 MB RAR archive. The name gives no brand. Matching files indexed alongside it link this board code to the Dell One XPS 2710 all-in-one, along with a boardview for the same board. Use the schematic to follow power sequencing, trace signals and identify the circuits around a fault, then use the boardview to find the parts on the PCB. Any PDF reader opens it. Confirm the board code before trusting values.
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 @schematicslaptop. 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)