It says it needs to be plugged into the PS4, not mains power. It has 2 USB plugs that plug into both slots of the PS4. Not good if you want to use an external HDD for game storage or the sony wireless headphones (I use both). So this is not really much use to me. The other thing to note is that it lights up very brightly, you're not going to want to have it sitting in front of the TV, it would be to distraction. On the plus side it does do the job advertised, I just wished I'd known it would take both of the USB ports on my PS4 to do it.