Small ZIP archive of 94.7 KB for the Lenovo ThinkPad X201, Wistron board 08270-1. Wistron uses this five-digit plus suffix project numbering, and it manufactured boards for this ThinkPad. The size is typical of a boardview file, which shows component placement, net names and test points for short hunting and rail tracing in viewers like OpenBoardView or FlexBV. Open the archive to confirm the format, and check the board number on the PCB matches 08270-1 before relying on part locations.
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 .zip file
Compressed archive that every operating system opens without extra software.