A:AnswerHello profbraddock, The device plugs into the HDMI port of the TV and the power cable goes into the USB port of the TV and no power brick is needed.
A:AnswerYes you can because the initial set up will "follow" the stick. Ask yourself if you really want to pull the stick every time you want to move between rooms.
A:AnswerHello NotTechSavvy, Yes this model does feature Bluetooth for headphones, you can also use the Roku Mobile App to use 4 more headphones on 1 TV
A:AnswerThis stick works off of your home Wi-Fi internet and is plugged in to your HDMI input Jack on your TV you may also need to add 5 Volt DC power to this stick but that may be available from your TV Varies by TV model
A:AnswerHello MisterGrumpy, DFS is compatible with the Roku streaming Stick 4k or the Roku Ultra but not this model. Here's a list of compatible models https://support.roku.com/article/21332729601687.