The Source D'Energie is a power supply module designed to power up to a 6U case with +/-12v and 5v rails. Wall wart plugs can be used for a skiff or case with few modules, but for anything more than that we recommend a 4A power supply such as this. The Source D'Energie has two 16 pin headers, perfect for powering two rows of your system.  LED's on the panel indicate the health of each rail at a glance