How do I connect a second TV to my Roku?
Getting The Roku Channel on your Samsung TV
Can you move a Roku from one TV to another?
Roku players Roku Express+ and certain older Roku player models include a composite video connection and will work with TVs without an HDMI port (see section below). A Roku Streaming Stick connects directly to the HDMI port on your TV, and does not need an HDMI cable.
To use the Roku on two screens, you can use an HDMI splitter that will send the signal from the Roku to two different televisions. Simply connect the Roku to the splitter using an HDMI cable, then connect two HDMI cables between the other end of the splitter, and two televisions.