The AirPort Extreme was a wireless base station that combined the functions of a router, network switch, wireless access point, Network-Attached Storage (NAS), and other features.
The AirPort Extreme Base Station Generation 4 (model A1354) was released in 2009 with a white, rounded-rectangle design that was similar to the look of the first-generation Mac mini and original Apple TV. AirPort Extreme Base Station Generations 1–5 shared the same design until a tower-like design was used for the final Generation 6 model.
The AirPort Extreme Base Station measured 6.5 inches square, 1.3 inches tall, and weighed 1.66 pounds. It supported 802.11a/b/g/n wireless network protocols.
The AirPort Extreme Base Station Generation 4 had the follwing interfaces:
- One Gigabit Ethernet WAN port for connecting a DSL or cable modem
- Three Gigabit Ethernet LAN ports for connecting computers or network devices
- USB 2.0 port for connecting a USB printer or USB external hard drive
- 802.11n wireless
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