due to this lack of info - 1 point deduction!
Who does not bother, product absolutely recommendable: freezes very quickly, super quiet!
2. deduction of points:
Usually great service, that such devices are brought to the site that is less that the suppliers immediately and take away his legs in the hand! I was just able to confirm the delivery (to me the clipboard has been pushed almost to the nose!), because they were already gone, to ask no chance, where the bill or is invoice (which were not at all incidentally, included - and only were forwarded on my part to ask Amazon as a copy !!! Well, where's the original? Usually not common at amazon, therefore slightly irritating) and then I had the 30 kilo device alone high lift to it from the deep cardboard get!
Conclusion:
Product: very satisfied
Service & Information: less satisfied
