For "TV-System" I needed this HDMI Switch urgently. Port 1 is occupied by my PS3. Port 2 is occupied by my Blu-Ray player. Port 3 is occupied by my Media Receiver. The last and single port on the other side of the device passes the signal of 1, 2 or 3 of my Soundbar that it conjures up a wonderful sound and retransmits the image on my TV. So I play 10 minutes of the PS3 ... Take the supplied remote control in his hand and unlock by pressing a button on port 2, because I want to see a movie. 2 seconds later, the image and the sound there. Then the film is boring and I turn up on port 3 to .... and again it works as it should. Simple, fast, convenient, because without this HDMI switch I would now have to get up twice to the soundbar can reposition the HDMI cable back so I watch movie or television can. 5 Stars.