Question: what is in the nintendo switch dock?
Answer: The dock basically do 2 things: It contains a small board that converts/devides the high speed USB-C signal from the port underneath the Switch to HDMI, 2xUSB 2 ports, 1xUSB-3 ports etc. This allows for the signal being sent to the TV through a HDMI cable. It allows for accessories to be connected through the dock.