Is it safe yet to buy a 4K TV? Manufacturers want us to think so, even though it seems that there’s always some new hitch to make consumers wary that the set they buy today will be an expensive doorstop a year or two down the road. For example, the first few 4K TVs lacked an HDMI 2.0 interface—a necessity if you wanted your set to be compatible with future 60-fps Ultra HD content like sports. When the next generation of 4K sets came out, there was a question of whether the HDMI 2.0 interface would support HDCP 2.2 content protection—a necessity if you wanted to watch copy-protected Ultra HD movies.
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