I currently have a 2015 MacBook Air which has a power port, two USB 2 ports, a Thunderbolt 2 port which I do not use, a SD port which I do not use, and a headphone jack. The 2020 MacBook Air appears to have two Thunderbolt 2 ports and a headphone jack. I am confused about the 2020 set-up (except for the headphone jack). I am guessing that one of the Thunderbolt 3 ports ends up dedicated to power in, if you leave it plugged in almost constantly as I do my old MacBook. That leaves just one Thunderbolt 3 port for everything else? Connection to my printer (wifi doesn't work for that where I live)? Connection to my hard drive backup? Connection for mouse receiver? And USB drives? Does it follow that a big hub is required? Or does whatever chaining Thunderbolt 3 devices somehow eliminate some of that need? I don't know how that works, either. Thanks for any enlightenment!