OnBoard Appliance Models The following table lists the number and types of power supplies and numbers of public Ethernet ports for each model. OnBoard Appliance Models Model PowerSupply # PowerType # of Private Ethernet Ports OnBoard1024 SAC 1 AC 24 OnBoard1040 SAC 1 AC 40 OnBoard1024 DAC 2 AC 24 OnBoard1040 DAC 2 AC 40 OnBoard1024 DDC 2 DC 24 OnBoard1040 DDC 2 DC 40