Help getting started with Roku devices, including setup, connecting your device to your TV, linking a Roku device to your account at my.roku.com/link, adding channels, subscribing to services, and more.
There is no power off function for any Roku player. The reasoning is they draw so little power it's better to leave them on and not have to wait for them to boot. If you really want them off when unused, you need to connect them to a powerstrip that can be turned off, or just unplug it.
Dan Roku Stick (3600), Ultra (4640), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.