30 day "demo" license for either the software version or for the appliance Demo CD. The license allows full gigabit controls and will run for 30 days without terminating. The only limitation is that the system must contact our server over the internet for authorization each time the unit is started (ie the start command is issued with the demo license key). Once started you will see the "seconds remaining" in the status which is the balance of the 30 days remaining.