Setup Guide
Page 7
... information about using PoE, see the document "Designing AirPort Extreme Networks," or "AirPort Networks for placement in places away from your AirPort Extreme Base Station. You cannot use PoE, you don't plan to use the AC power adapter to a standard telephone jack. External antenna port Connect an Apple-certified external antenna to UL Standard 2043, "Fire Test for Heat...
... information about using PoE, see the document "Designing AirPort Extreme Networks," or "AirPort Networks for placement in places away from your AirPort Extreme Base Station. You cannot use PoE, you don't plan to use the AC power adapter to a standard telephone jack. External antenna port Connect an Apple-certified external antenna to UL Standard 2043, "Fire Test for Heat...