RGA means Return Goods Authorization. This lets both us and the customer know that we are expecting the unit to be delivered to our warehouse. The RGA number that customer support provides you helps us track where the unit came from and what support ticket it is associated with to help with repairs and such. Without the RGA number on the box, we have no idea why the unit was sent back to us and may result in a package being declined upon arrival. All returns must be approved and an RGA number must be present from the customer support team.