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Plugging in a Roku Stick directly into a TV's HDMI port is convenient, but not always the best for optimal performance.
Because when it's stuck behind a TV, the Wi-Fi signal is blocked well, by the TV. And there is also less air circulation, so they tend to run hotter. Which can cause other issues like lock-ups or Roku Freeze.
To get your free HDMI extender cable sent to your home, just fill out the form on this Roku page.
And Roku will send a free cable extender right to your door.