Boardview for the ASUS A6410 all-in-one desktop, board ET22211 revision 1.2, in a 185 KB ZIP. The name does not give the viewer format, so check the extracted file extension and open it in a matching tool such as OpenBoardView or FlexBV. A boardview lets you find components, follow nets and locate test points on the mainboard while diagnosing power or boot failures. Compare the ET22211 number and revision on the PCB with the file before relying on it.
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 @cynetitsolution. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip