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We are unable to stream directly to a Smart TV at this time without the use of a connected device. However, if you do have a connected device (Roku, Chromecast, Amazon Fire Stick/TV, or an Apple TV) you can plug this into the back of the TV and stream to it this way. I have placed an article below that goes over the different connected devices that work with the different Slingboxes.
I hope this helps!!!
Sling Media Moderation Team