I bought one of these to go with VEP. The first key "broke" within the first month. After emailing VSL they offered to replace it - unfortunately, I had to pay for "tracked" mail all the way to Germany from the UK (which wasn't cheap!). They replaced and returned the key without any problem, but it ended up costing more than I paid for it. This is not Thomann's fault, but a fault with the way VSL insist on "broken keys" being returned to prove you have a license on them. I was just unlucky enough to have mine stop working in the first 3 weeks, but when the key does break down (they are only guaranteed for a couple of years) you will have to pay the postage - which is worth tracking, because if it gets lost, VSL won't replace and you will have to buy new licenses again (at full price).