Seasonic M12II 500W Power Supply Review

Packaging & Accessories


The packaging of this power supply keeps with the simple tradition of past Seasonic products with an overall plain design which is highlighted by splashes of color. On the front we see a great view of the M12II itself with some heavily stylized graphics which work well to draw your eye if this were presented in a retail store environment. There is also a mention of Seasonic’s 5-year warranty while the bottom right of the package holds information about the inclusion of an 8-pin PCI-E connector. Like with all of Seasonic’s retail power supplies, the M12II is 80Plus certified which means it has a minimum efficiency of at least 80% at 20%, 50% and 100% of its rated output.

Meanwhile, the back of the packaging holds a ton of bullet points which advertise the M12’s numerous features and pretty much everything else you would possibly want to know about this power supply.


Once the box is opened we are greeted with a tidy arrangement which works extremely well to protect your new purchase. The M12 housing is wrapped in bubble wrap in order to protect it from both scratches and minor bumps while in transit while the power cord is pushed to the side of the box in order to give additional protection to the unit itself.

The rightmost portion of the package flips open to reveal all of the modular cables in a clear plastic as well as a few other accessories.


Since this is a $120 power supply, we were not expecting much in the way of accessories and our expectations proved correct after we had finished rifling through the box. While it would have been nice to get some sort of bag for the unused cables, all Seasonic has included is an instruction manual, a warranty card, a Seasonic case badge and the usual power cord and mounting screws. In the past we have seen manufacturers provide us with black mounting screws when the housing of the power supply is black but Seasonic has went with the usual chrome plated screws here. This is unfortunate since if you have this power supply installed in a black case, these screws will stick out like a sore thumb.