Broadcom BCM94331PCIEDUAL

The Broadcom logo, "BCM94331PCIEDUAL", and "200-120101-0050 A"
 * is silkscreened on the wireless module in the FCC photos.

Per a C2PC, this device is used (or will be) in the models:
 * Apple AirPort Extreme Base Station A1408 (MD031LL/A)
 * Apple Time Capsule A1409 (2 TB, MD032LL/A)

BCM94331PCIEDUAL (SKU): Certification ID: WFA11860

Reviews

 * On SmallNetBuilder

Forum threads

 * On OpenWrt forums