kiwaczek wrote:
Hello all

I just bought Asus 1080Ti, and when i try register it on the asus site ,,, i got a error information | this serial number is already in use" ..
Could anybody help me out please ?

Best Regards

It sounds like you may have purchased a returned unit that was put back on the shelf (not literally) by the retailer or it was an open box product, both of which could lead to the current situation.

You can contact customer support directly to see if they can help you with this.
https://vip.asus.com/VIP2/Services/QuestionForm?lang=en-us&_ga=1.103253376.180244931.1468904389