There are 2 different zeus controllers. The zeus 16 uses a pc power supply like the active hub, While the zeus 8 has 12 Volt input. You can still power the zeus 8 with a pc power supply, By jumping the green wire to a black wire on the big connector.
The zeus controllers are like 8 or 16 smart string controllers on 1 board, they have terminals like the express and will have 3 screws for each string.