A Roku is a device which streams media such as movies, shows, or music from the internet to your TV. Roku setup is very simple, you can connect it to the internet in the same way as you connect the PC. There are basically three types of Roku devices available which include Roku Box, Roku Streaming Stick, and Roku TV. Roku Streaming Stick is a compact device somewhat larger than a USB flash drive. You need to plug it into an HDMI input of the TV. In some cases, it has been noticed that the Roku streaming stick starts overheating, to get rid of overheating of the device you can contact Roku Customer Support for better guidance.
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Online TV Customer Services 