You don't have to replace the Hopper 3. The Hopper+ plugs into your Hopper 3s USB port. Then the HDMI cable to your TV unlplugs from your Hopper 3 and plugs into your Hopper+.If I am thinking right, is the Hopper + still a one time fee of 50.00? I also have to call Dish?? The Only Reservation for me doing this, would have to be replacing the Hopper 3, and I know, that HipKat wasn't sure why I would have to replace the Hopper 3.