Adapters at the airport can run you more than double the price of this one and they generally only have one socket, maybe one ...

A power supply for electronic devices. Also called an "AC adapter" or "charger," power adapters plug into a wall outlet and convert AC to a single DC voltage. Computers use multiple DC voltages ...

A device that transfers power to smartphones, tablets and myriad portable devices. USB chargers plug into an AC outlet and provide a USB Type A or Type C socket to cable DC power to the device.

you don't have to drop hundreds on a mesh networking system. A USB Wi-Fi antenna is a much more affordable alternative.