Can't connect to Arduino Nano Every (ATMEGA4809)

I can connect to my Arduino nano every on any serial port. The only serial ports available when I select Arduino Nano Every" as the board are:
/dev/cu.Bluetooth-Incoming-Port
/dev/cu.EV3-WirelessEV3

I am using a MacBook Air running OS X El Capitan (Version 10.11.6)

Does anyone know what is going on, or what I should do?