Seasonic M12II 500W Power Supply Review

Exterior Impressions


The exterior of the Seasonic M12II is pretty much par for the course when it comes to Seasonic power supplies. It has a matte black finish which is quite durable to scratches while the top is dominated by a single 120m fan to cool the interior components. Meanwhile, the back of the unit consists of a punched metal exhaust grille and the usual on / off switch and AC power connector.

Overall, the Seasonic M12II is a compact power supply even though it has a modular interface and this means it will have no trouble fitting into literally any enclosure.


Seasonic has equipped this power supply with Active PFC as is evident by its lack of an input voltage selector on the back of the unit.


The main feature of the M12II 500W is its modular interface. This is not a fully modular interface like we have seen in the past with some Silverstone units where even the ATX 24-pin connector is modular but as you can see, Seasonic took a much simpler route. Even though this interface may be simple, it is great to have the choice of a modular interface on a power supply in this price range since consumers don’t want to shell out $150 or more for unit with this option.