MacBook Air:
MacBook Air (13-inch Mid 2017)Model ID: MacBookAir7,2 (1.8GHz i5, 2.2GHz i7)
MacBook Air (11-inch Early 2015)Model ID: MacBookAir7,1 (1.6GHz i5, 2.2GHz i7)
MacBook Air (13-inch Early 2014)Model ID: MacBookAir6,2 (1.4GHz, 1.7GHz)
MacBook Air (11-inch Early 2014)Model ID: MacBookAir6,1 (1.4GHz, 1.7GHz)
MacBook Air (13-inch Mid 2013)Model ID: MacBookAir6,2 (1.3GHz, 1.7GHz)
MacBook Air (11-inch Mid 2013)Model ID: MacBookAir6,1 (1.3GHz, 1.7GHz)
Mac Pro:
Mac Pro (December, 2013) Model ID: MacPro6,1 (2.7GHz 3.0GHz, 3.5GHz, 3.7GHz)