How to Attach an External USB Hard Drive to your AirPort Extreme
Apple Airport Express USB Audio Output Mod | H i F i D U I N O
Apple Tested USB Hard Disk Support for 2012 AirPort Express - MacRumors
Apple Airport Express USB Audio Output Mod | H i F i D U I N O
Apple AirPort Express Base Station with 802.11n – kamlau.com
Sometimes it's the little things: the audio out jack on the AirPort Express glows red when you start playing music and there are no speakers plugged in : r/apple
How to Share a Printer Wirelessly Using Your AirPort Express - iClarified