I got all 3 products of this brand, NC ZM-1000, ZM-NC 2000 and this one .. to 3 different computers. Before buying it, I tested on the third computer the ZM-NC 2000 as to whether I reprennais or if I was looking for a new model. The person using this computer to me said his problem was heating over the vent holes and thus was not sure that the ZM-2000 NC work properly. It was there that I saw was that the 3000 has a larger grid of vents, which occupied all the space of the computer. We said that the product fit our needs, more the number of USB ports was an advantage and the ability to plug directly into the mains allowing us to save a USB port. We did not test this feature because we did not buy the power adapter.
After several days of use, and in fact the first day, we are very satisfied. It is much quieter than previous and very effective, the model U is very nice, the design is very well finished. Having the controls at the back seemed to be annoying before purchase, but in fact no problem and even makes life easier because the connections are not made just left a little right, but all in one place.
It is a product that I highly recommend!
The only downside and again, this is not a problem for all is its size: in fact occurs is large, so not suitable for transport, but I think few people move their 17-inch or only for vacation or a trip and so have a bag or suitcase.