In order to download the files mentioned, run the following command in MATLAB Online Command Window
The Current Folder will be updated with the files "connector_ab.s4p", "connector_cd.s4p", "connector_ef.s4p", and "connector_gh.s4p".
Later follow the steps mentioned below:
1)Click on the HOME tab
2)Click on the file name that you want in the Current Folder
3)The above step will enable the Download option in HOME tab
4)Click the Download button to save the file to your local system
Refer to this for more information.
Hope this helps!