RAR archive for the PT10F board in its UMA version, meaning integrated graphics without a discrete GPU, at revision 2.1. At 1.10 MB it likely holds a schematic or boardview, though the name does not specify which. A related Pegatron PT10FG boardview exists, suggesting Pegatron as the board maker, but the name itself does not state a brand. Check the PT10F code and revision on the PCB, then use the files to trace power rails, find components and locate test points.
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 @alischematics. 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)