default ip of the ZD is 192.168.0.2
so plug a network cable from laptop to switch and switch to ZD
change ip laptop to 192.168.0.3 (for instance).
Now load a web browser with 192.168.0.2 (remember to put the ZD IP into the proxy bypass settings) and connect to the ZD web GUI.
Rest is down to you.
Zone Director User Guide 9.9 p43 image attached...
with a slightly different setup approach but the basics are the same.