If you are familiar with the DLA hubs, you are aware that that they have 24-pin connectors, and 4-pin connectors that allow you to use cheap PC power supplies by using the connectors intended for the motherboard, and connectors intended for CD and hard drives.
The DLA solution lock you into PC power supplies because of these connectors.
The Falcon boards, and other kits out there use a simpler screwdown terminal connector... 2 wires for +12V and Ground.
If you still want to use PC power supplies to get cheap +12V and even +5V power, then an ATX kit like this does the conversion from the PC power supply connectors, and its own screwdown terminal connectors.
So, using a kit like this and a PC power supply you get +12V (and +5V) power useable for various kits.