RAR archive of 153 KB describing how to disable onboard RAM on the ASUS TP500LN, board revision 2.0. This modification is used when soldered memory fails, letting the laptop run from the SO-DIMM slot alone, typically by changing a strap resistor or the BIOS configuration. Check that the board is revision 2.0 before following the steps, since component positions differ between revisions. If the procedure involves a modified BIOS, dump and save the original SPI flash with a programmer before writing anything.
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 @ITHINKHS. 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.