Hi @Skurt,
Welcome to the Roku Community!
Thank you for reaching us about your inquiry. Regarding this, you can connect external devices to your TV while in Guest Mode. The Guest Mode on Roku allows you to sign in with your account and stream content with your channels.
If there's anything we can further assist you with aside from this, let us know.
All the best,
Kash
Takashi O.
Roku Community Moderator