The back of the power supply is a nice honey comb design to allow for maximum ventilation and to keep with Sea Sonics’ idea of having a silent product. Unlike most power supplies, these units do not have a switch to go from 115v to 220v; they have Universal Free AC input, which allows the unit to select the voltage on its own. This is a very handy feature to prevent any problems that may be caused by having the switch set wrong. The S12 comes with pre-twisted wires on all the cables, which allows for better cable control and cooling in the computer. Also, the ATX motherboard connector can be switch from 20-pin to 24-pin depending on the application. Also shown is a serial ATA connector, the dual CPU power connector, and the connector to monitor the units fans through the motherboard.

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