Archive labelled X230DS K4 with a 2017 date and a Brazilian repair site tag, 9.27 MB in ZIP form. The name alone does not reveal whether the contents are a firmware dump, schematic or service files, and no brand is given, so open it and inspect the files before use. Technicians usually keep such packages for flashing or diagnosis; compare any model or board marking inside against the device on the bench, and if it contains a flash image, back up the original memory first and confirm the dump size fits the target chip.
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 @esquemaseletricos. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.