The product is very well-designed, the keyboard is very similar to a standard keyboard. Since I have made myself a little silly with the joining, I sent an email to adapter-Universe and within less than 1 hour back get a mail how should I proceed. I then later happens that a key has gone out. It could not be determined, however, whether that was my fault, or the fault of the product. I then tried with superglue, the key to stick again, but this was not working. I simply requested at Adapter Universe if they take back the article and it was without Problemeersetzt. On Friday afternoon sent back, on Tuesday again already get a new keyboard, although they would not have been obliged since the key was already glued. Should I again need something that has adapter-Universe in the range, I would immediately order and priority in Ihne. A big compliment to the service !!