Cable. The Wu-1B just connects it to a phone/tablet. The Wu-1B is a cool concept, but I don't use it. I have a Nikon app on my phone, and my phone connects to the camera so I can download images right off my camera. It's slow.. glitchy.. but you can use it as a remote trigger. If your like 2 feet from it, lol. To tether, you need a USB cord. That works fast and wonderful. I use that with my laptop to see the pictures as I'm taking them, since my screen on my laptop is a lot bigger than my camera. And you can see how it's going to look on a screen.