Roku Premiere+. Because of how user-friendly they are, Roku devices are arguably the best TV box for Plex devices for the average user. The Premiere+ sports 4K video capability, HDR, and a bevy of apps aside from Plex. There’s wi-fi onboard, and an Ethernet port. For 4K, Ethernet is most definitely the way to go.How is Plex free?
The basic functionality of Plex is completely free. Some Plex apps require being unlocked (through an in-app purchase or a Plex Pass subscription), and some premium features are restricted to those with an active Plex Pass subscription.What is Plex play?
Plex is a media player system and software suite comprising many player applications for 10-foot user interfaces, and an associated media server that organizes personal media stored on local devices.