Networking SOHO printer with Air Gateway

[sevenbasketsfarm]

My local internet provider uses an Ubiquiti air gateway for my Wi-Fi. It only has one LAN port. I want to network my home office printer with two desktops. Should I use a hub, a switch, or a router or can I connect the printer to the LAN port on the air gateway and access it via wifi? I tried this option and it definitely doesn't work as a plug and play option. Thanks.

 

[jsmithepa]

This should be as simple as hooking up an ethernet switch on the LAN port. If it doesn't work, I have no idea.