Is this what the back of your TV looks like? I see four holes.
![50R6E.jpg 50R6E.jpg](https://community.roku.com/t5/image/serverpage/image-id/16998iAA7D56733CA7E5DC/image-size/medium/is-moderation-mode/true?v=v2&px=400)
There's also a diagram in the Quick Start Guide.
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