Storage
3TB hard drive
Wireless
IEEE 802.11a/b/g/n/ac
Six-element beamforming antenna array
Simultaneous dual-band 2.4GHz and 5GHz
Radio output power: 32.5 dBm maximum (varies by country)
Compatibility
Interoperable with 802.11a, 802.11b, 802.11g, 802.11n, and 802.11ac-enabled Mac computers, iOS devices, Apple TV, Windows-based PCs, and other Wi-Fi device
Security
Wi‑Fi Protected Access™ (WPA/WPA2)
WPA/WPA2 Enterprise
MAC address filtering
NAT firewall
802.1X, PEAP, LEAP, TTLS, TLS, FAST
Time-based access control
Interfaces
Simultaneous dual-band 802.11ac wireless
Gigabit Ethernet WAN port for connecting a DSL modem, cable modem, or Ethernet network
USB 2 port for connecting a USB printer or hard drive
Three Gigabit Ethernet LAN ports for connecting a computer, Ethernet hub, or networked printer
Built-in power supply
Setup and Administration
iPhone, iPad, or iPod touch with iOS 6 or later and AirPort Utility 1.3
Mac with OS X Lion v10.7.5 or later and AirPort Utility 6.3
Wireless Device Access
Any Wi‑Fi-enabled device that uses the 802.11a/b/g/n/ac specification
Shared Printing with a USB Printer
USB printer
Mac with OS X v10.2.7 or later
PC with Windows XP (SP3), Windows Vista (SP2), Windows 7 (SP1), or Windows 8
Shared USB Hard Drive
Mac with OS X v10.4.8 or later
PC with Windows XP (SP3), Windows Vista (SP2), Windows 7 (SP1), or Windows 8
Backup using Time Machine
Mac with OS X v10.5.7 or later