Other than supporting the new wireless 802.11ac standard, the new AirPort Extreme also had a complete makeover. In fact, it looks exactly like the new AirPort Time Capsule, just that Time Capsule comes with either a 2TB or 3TB drive option. AirPort Extreme does not support an internal hard drive as there isn’t any interface within the device that allows you to connect to one.
AirPort Extreme has a built in cooling fan to ensure that the whole system runs cool, but it seems unnecessary as we thought that it would not run too hot without any hard drives.
AirPort Extreme uses a Broadcom BCM53019 chip to provide the device with its routing and gigabit switching capabilities. Additionally, it uses a Broadcom BCM4360KLMG for the Wireless AC provision. The remains contain Hynix H5TC4G63AFR, Micron 25Q256A 32MB flash memory, as well as Skyworks 5003L1 (5GHz WLAN Power amplifier) and 2623L (2.4HGz WLAN Power amplifier).
iFixit thinks that AirPort Extreme is fairly easy to be maintained, thus giving it a maintainability socre of 8 out of 10 points where 10 is the most maintainable. This is because the deivce does not use any glue, and users can easily clean its fan and there were no proprietary screws to hold everything together. However, if users want to convert it into a Time Capsule, it may still be quite challenging.