Expand your existing BT Whole Home Wi-Fi -Additional Disc - network system with this add-on disc. This additional disc will only work when added to BT's Whole Home Wi-Fi solution to further expand your superfast, super-reliable Wi-Fi network. With a mighty AC2500 wireless punch Whole Home Wi-Fi puts what matters most at your fingertips. It talks to all your gadgets to make sure they're always automatically connected to the fastest and strongest signal. And it's bristling with brilliant controls that put you in charge of a supercharged home network. This is Wi-Fi at its finest. With BT Whole Home Wi-Fi you can have your favourite TV, films, music and games in any room you wish. No more dead spots. Even when there's a laptop connected in the kitchen, smartphones upstairs and a tablet in the lounge - they all stay connected, all the time.