This page gives you an overview of the SSH public keys for public-key authentication that are accepted by the device. WEBconfig outputs the overview as a text field, which at any time can also be used to add additional keys and / or edit existing ones as an alternative to uploading a file in the File management section.
More about this topic and key syntax can be found in the chapter Syntax and modifying public-key users.
Important: Enter new keys on a separate line; line breaks are not permitted in key strings.