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The ST50EF-Plus comes in a very sturdy cardboard box, with appealing and not overbearing graphics. The power supplied was packaged in a plastic bag to protect the finish, but I was a little shocked there was no bubble warp or anti static foam to protect from the bumps of shipping. (On the flip side, the product was packaged very well for shipping when it was received.) Inside you find the needed components to install the power supply. The manual, screws, power cable, 4-pin P4 power connector, and a 24-20 pin converter.
The ST50EF-Plus is painted black (lead-free) for a nice matte finish that should compliment just about any setup. It uses a single 120mm Adda fan (AD1212HS-A71GL) that according to the spec sheet is rated at 85.2 CFM @ 39.1 dBA spinning at 2200 RPM. The weight of the ST50EF-Plus is 2.5 kg (about 6 lbs) so it would seem to be a pretty stout power supply.
The inside of the ST50EF-Plus is packed full of components to make up the 2.5 kg weight. Surprisingly the heatsink does not look to make up that much of the weight. It will be interesting to see the operating temps later on in the review to see how the ADDA 120mm fan takes care of the heat. Otherwise the standard fare is in there. Large capacitors, coils, and other electronics to convert the power into useable voltage for your components. SilverStone gets kudos for running the cables our of the left side of the PSU to allow for easier routing of the cables in your case. I would have liked to see a grommet on the shell to protect the bundle of wires coming out of the power supply. Some adjustable pots for the rails would be nice too.