Customer is responsible for returning the faulty unit back to us. If any changes have been made to the unit, we will reject the return. If you are not sure about anything, please do not assume but ask us. If you are not satisfied, please let us know so that we may resolve the issue.This item is in the category "Computers/Tablets & Networking\Enterprise Networking, Servers\Switches & Hubs\Network Switches". The seller is "ccnxteam" and is located in this country: AU. This item can be shipped worldwide.