I purchased the Tuwejia Multiport Adapter and set it up as per the pictures in the following link on a recent Princess cruise. My question is, "how do you switch the input to HDMI?" I had tested the set up at home, but my TV was already set for HDMI, and it worked great. Tried it on the ship, didn't work so great. Actually, not at all. Have no idea on how to switch input.