@Nick2 wrote: I own a model 4630X Roku box. Do I need to buy a streaming device to stream channels or can I get them with the box I have?
The 4630 is the Premiere+. It is a supported model (just not the latest version) and supports all available Roku channels. As @dgrace mentioned, just choose the channels you'd like from the channel store on the player, or log into your account on the Roku web site and search for channels there.
Dan Roku Stick (3600), Ultra (4640), Ultra (4670), Ultra (4800), 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.