ZIP archive of 7.33 MB labelled XU133T revision 1.4. The name states only this model or board code and revision, without brand or contents, so it may contain schematics, boardview or firmware for that device. Unpack it to see what is included before relying on it. Whatever the contents, the revision printed on the PCB should read 1.4 for the data to match, since component placement and circuits can change between revisions. Use it to trace rails and signals or reflash firmware as the files allow.
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 @Satale_bios_esquemas_Laptop. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.