These reviews are a bit confusing as this list represents a number of different types of adapters. This is an overview for USB to C HDMI adapters. This product does exactly what it was designed to do. You can use it to replace the Switch dock and mirror the Samsung Note 9 (I assume all Samsung products with USB-C ports are the same). The Dex software is cool and intuitive, and the screen mirroring is perfect. One very big caveat is that I've found that cheaper HDMI cables only result in video being sent to the TV it's connected to. I tried four HDMI cables, two of which were very cheap (but great for any other purpose) and two of which were cheaper and of higher quality. Only higher quality cables will work. So if you are having trouble uploading videos but sound or audio is not streaming over HDMI, try other HDMI cables. The cheap Revain base kit might not be good enough. This wasn't a problem for me as I have several unused HDMI cables that I can tamper with. Cheap HDMI cables have been relegated to other devices. But it's certainly a shame that if you don't have good HDMI cables, you can be totally SOL. For that I have to say that this is a 3 star product.