Unfortunately, our TV only has 2 HDMI ports. On HDMI1 the SAT receiver depends. To date, at HDMI2 we had the PS4. As then, there was the Amazon Fire TV Box to Wurd's difficult because we lacked a connection.
At first I was skeptical, but I have to say that the switch works exactly as I had imagined in advance: As the PS4 has its own on-off switch, it has automatically Priotität. This means that if the PS4 is turned off, the image of the Amazon Fire TV box appears. Once the PS4 will boot up, this appears to HDMI2. Just as it should sien: Perfect!