ProSafe Plus Utility
In case you aren't aware of the default IP (192.168.0.239) for the web interface, it is on the label on the bottom of the switch. You will have to install and run Netgear's ProSafe Plus utility, which will discover the switch inside your network. The same application will also allow you to change the default IP address.
Web Interface
The default password is "password".
You can take a glimpse at all the options, menus, and sub-menus the web interface features in the table above.