what does a tv roku stick do?
One popular way to add this feature is through a streaming media player, such as a Roku 3 or Apple TV. But there's another, less obtrusive option: a small flash-drive-sized stick that fits into a special HDMI input on the back or side of your TV. Probably the best known of these devices is the Roku Streaming Stick, a small, purple streaming-media player that delivers all the Roku features we've come to like. The pint-sized player, which costs $100, slips into an MHL (Mobile High-definition Link) slot on the TV, which looks like a standard HDMI input.