ASUS Eee PC 1015P netbook files packed in a 487 KB RAR archive. The name identifies only the model, leaving open whether the archive carries a BIOS image, a boardview or schematic pages. The compact size points toward firmware or a boardview rather than a full schematic set. After extracting, check what each file is and compare the motherboard revision printed on the PCB with the document or dump. When reflashing an SPI chip with a programmer, save the original contents first and verify the image size matches the chip capacity.
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 @boardviewsandachematics. 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.