Regarding ports and hubs, see this (lengthy) discussion:
In particular some monitors behave like a hub and have USB ports that allow you connect external hard drives to a Macbook (as well as providing power and video via USB-c/Thunderbolt cable).
Regarding ports and hubs, see this (lengthy) discussion:
In particular some monitors behave like a hub and have USB ports that allow you connect external hard drives to a Macbook (as well as providing power and video via USB-c/Thunderbolt cable).