The Apple Time Capsule 4th Generation is a wireless network-attached storage device that was designed, manufactured, and sold by Apple from 2011 to 2013 as part of the AirPort Time Capsule series. The Capsule has been introduced on June 21, 2011, and its price started at $299.
The new Time Capsule features a Gigabit Ethernet (10/100/1000BASE-T), 2 or 3 TB of hard drive, Data rate up to 540 Mbps, compatibility with 802.11a/b/g/n protocols, guest networking, three LAN ports, possibility to connect up to 50 devices. It is marketed as a backup device designed to work in tandem with the Time Machine backup utility, introduced in Mac OS X 10.5 Leopard.
The device includes a full AirPort Extreme (with 802.11n wireless, an Ethernet WAN port, and three Ethernet LAN ports) and Dual-band operation on 2.4 GHz and 5 GHz simultaneously.

This Time Capsule has been discontinued on June 10, 2013.
Today Time Capsule 4th Generation is 12 years old!
Time Capsule 4th Generation Release Date and Original Price
Introduced | June 21, 2011 |
Discontinued | June 10, 2013 |
Model Number | A1409 |
Order Number | MD032LL/A (2 TB) MD033LL/A (3 TB) |
Original Price | $299 (2 TB) $499 (3 TB) |
Weight | 3.5 Ibs. 1.587 KG |
Dimensions | 1.4″ D x 7.7″ H x 7.7″ W 3.55 cm D x 19.55 cm H x 19.55 cm W |

Wireless
Wireless Data Range | 200 – 540 Mbps |
Compatibility | Wi-Fi (802.11a/b/g/n) |
Frequency | 2.4 GHz or 5 GHz simultaneously |
Radio Output Power | 20 dBm (nominal) |
Security | WPA WPA2 WEP (40-bit or 128-bit encryption) |
Capacity | 50 users |
MIMO Config | 3×3:3 |
Supported Protocols | NAT DHCP PPPoE VPN Passthrough (IPSec, PPTP, and L2TP) DNS Proxy SNMP |
Connections
Ports | 4 – Ethernet (10/100/1000BASE-T) 1 – USB |
Storage | 2 TB 3 TB |
AirPlay | No |
Power over Ethernet | No |

References:
Apple Support – AirPort Time Capsule 802.11n (4th Generation): Technical Specifications