To play 4K content, your ultrahigh-definition (UHD) TV must include an HDMI port that includes high-bandwidth digital content protection (HDCP) 2.2. Furthermore, although HDCP 2.2 can be found in HDMI 1.4 and HDMI 2.0 ports, only HDMI 2.0 ports deliver adequate bandwidth for you to see the benefits of high dynamic range (HDR) technology. The good news is that almost every UHDTV that’s been made since 2015 includes at least one HDMI 2.0 port that has HDCP 2.2.
Now, you should get ready for HDMI 2.1. The industry group HDMI Forum finalized the new standard in June 2017.
HDMI 2.1 ports will be able to transfer up to 48 gigabits per second (gbps) of data, compared with HDMI 2.0’s maximum of 18 gbps.
Manufacturers will start to introduce TVs that have HDMI 2.1 ports in 2018, but experts tell us that the extra bandwidth won’t be necessary for at least 3 years, when the next generation of TVs are capable of displaying frame rates as high as 120 frames per second and can deliver 8K (7680 x 4320) resolution.