Finally a functioning switch!

After several unsuccessful attempts in the past, my TV box, my DVD player and a laptop with a switch on my single existing HDMI port to connect to the TV and still be able to use all the devices as usual, I had with this switch at last Success! Since I so some switches have tried, I can say for me it is the only one who works without power supply. Only the automatic switching does not always work perfectly for me, but for the small remote control's attached as an accessory.
IMPORTANT: Not every HDMI cable works, in my experience, at each port, so do not give up too quickly, if not immediately an image is transferred, but quietly reposition and try a little - the seller's customer service helps you quickly and competently!