Q: Ethernet Wire Standard On AirPorts?

To my knowledge Apple has not released this type of detail. Since we are all Apple product users here at the Apple Support Communities (ASC) none of us would know unless someone has actually taken apart the Extreme to this level.

FWIW, in the U.S. T568B superseded T568A, and is the most common standard used.

The 802.11ac AirPort Extreme is based on a Broadcom BCM53019 System on a Chip (SoC) with integrated Ethernet switch.