LAN – mattjfuller.com

According to Apple, this AirPort Extreme (Generation 3) provided “simultaneous dual-band wireless 802.11n networking. When you set up your AirPort Extreme Base Station, it creates two high-speed Wi-Fi networks.”

The AirPort Extreme Generation 3 had 5 ports:

1 10/100/1000Base-T Gigabit Ethernet Wide Area Network (WAN) port (for DSL/cable modem)
3 10/100/1000Base-T Gigabit Ethernet Local Area Network (LAN) (for Ethernet devices, such as printers or computers)
1 USB port (for a USB printer, hard disk, or hub)

This device is packaged as an Apple Service part and does not include the retail packaging. The box, labeled Part Number 661-4908, contains the three parts needed to repair or replace the device including a power adapter, a power plug (North America), and a base station.

This AirPort Extreme model was available for less than 8 months before it was replaced by the Generation 4 model. It measured 6.5 x 6.5 inches square and was 1.3 inches tall. It weighed 1.66 pounds.

Sources: Apple (manuals), Wikipedia

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: