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.
Does Roku have internal storage for pictures in the screen saver
No, Roku devices have no internal storage for anything except the channels themselves. For players with a USB port (the only current model with one is the Ultra), you can put image files on a USB stick and use that as a source for some screensavers, as well as playing videos or music from the stick.
Dan Roku Stick (3600), Ultra (4640), Ultra (4670), 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.