The quality I find very high. The power supply looks very similar to the original. Only the shape deviates from minimal (the corners are pointed). On the device itself can be found all important data (supports voltages from 100V 240V, etc.) and a CE marking.
The delivery was also an instruction manual in German and English. This are also a list of all technical data well.
Much more there really is not to say. ;)
The Wicked Chili Pro Series PSU (Ultra Slim - USB adapter) I have received for free via testberichte.reviews without further conditions.
>>> A vote from my review, I would be very happy. Thanks in advance!
>>> Questions you provide via comment!