How to Attach an External USB Hard Drive to your AirPort Extreme
Apple AirPort Extreme Base Station (5th Generation) MD031LL/A
How to Install and Setup Your Airport Extreme - iClarified
Apple AirPort Extreme MD031LL/A IEEE 802.11n Wireless Router - 2.40 GHz ISM Band - 5 GHz UNII Band - 6.75 MB/s Wireless Speed - 3 x Network Port - 1 x Broadband Port - USB - Fast Ethernet - Desktop - Wulus
How to Attach an External USB Hard Drive to your AirPort Extreme
Amazon.com: OMNIHIL 8 Feet AC Power Cord Compatible with Apple Airport Extreme/Time Capsule - 2TB / 3TB Express Power Supply Charger Cord (White) : Electronics
The new AirPort Extreme can house SATA hard drive, teardown reveals