Solo appears to use a 2x2 WiFi MiMo configuration

[Rich]

For those that may be interested, I found this fairly clear and easy to understand explanation of WiFi MIMO technology:

http://wifijedi.com/2009/01/24/how-stuff-works-80211n-mimo/

Considering that the Solo has two WiFi antennas (two legs have an antenna), and the controller has two antennas, this makes it a 2X2 MiMo system.