Easy-upgrade #2: Add a new AirPort card that supports 802.11ac Wi-Fi.

Apple's go-to provider of 802.11ac support is again at work. The Broadcom BCM4360 on this AirPort card enables operation on the 5 GHz band at speeds up to 1.3 Gbps.

A Broadcom BCM20702 Single-Chip Bluetooth 4.0 Processor gets Bluetoothy things done for your convenience.

Also in residence are a pair of Skyworks SE5516 dual-band 802.11 a/b/g/n/ac WLAN front-end modules.