Review on Switch OLED Dock Charger Adapter - 3 in 1 Switch Charger for TV - Switch TV Dock with USB 3.0 Port - Covert Dock Switch for Android Smartphone Tablet - 1.2M Power Cord by Gary Hall

This device works great! The size is quite small, no larger than the palm of your hand. The connector is solid with no play. The device feels a bit warm after all day, but not hot at all. Connect to the switch and display the monitor or TV, there is no audio or video lag. You can connect it to a TV, so you can't use the joystick when it's connected to the Switch. You must remove the joystick to play. The switch becomes the charging port for the joycon. If you want to play the Switch with a joystick, just don't connect the HDMI to your TV, it will be like just charging the Switch. The device charges the Switch while you play. The output power of some other brands is too low, so the charger will slowly drain while you are plugged in and playing. So this device does its job well.