There could be more clarity around the wireless card. It does not have an "Extra" antenna for 802.11, that J3 antenna is hooked into the BCM2070 Bluetooth chip at the bottom of that wireless board, so it's a bluetooth antenna.
Apple is still ahead of the game with a 3x3:3 radio, as most APs (Even Cisco enterprise APs) do not support 3 spatial streams today. In fact, most Cisco APs are 3x2:2 (3 antennas, 2 transmit chains, 2 spatial streams). Aruba APs are mostly 3x3:2 (3 antennas, 3 transmit chains, but still only 2 spatial streams). Mobile phones with 802.11n today are usually 1 spatial stream and 1 antenna (Which is why they max at a 65mbps data rate). Most laptops are 2 spatial stream (Max at 150mb data rate on 2.4ghz, or 300mb on 5ghz (when 40mhz wide channels are enabled). Apple is claiming 450 mb data rates because in a 40mhz channel 5ghz situation, they can use a 3rd spatial stream. Most APs don't yet support this, but the AIrport Extreme from Apple does.
Sobald er das hat, wird er in der Lage sein, eine Grafik zu seiner im Laufe der Zeit erlangten Reputation zu sehen.
Hier ist eine Vorschau, wie die Grafik aussehen wird:
Noch keine Reputation erlangt.