The best modern TVs come with a few HDMI 2.1 and 2.0 ports to help you connect all your devices together, but if that's not enough, or you want greater control without reaching behind the TV, an HDMI ...
If you find yourself running out of HDMI inputs, or want to send the signal from one source to multiple TVs, you'll need either a switch or a splitter. Also called switchers or distribution amplifiers ...