Apple MacBook Air (2017) 13.3" Intel Core i5 1.8GHz / 8GB / 128GB
2
Apple MacBook Pro (2015) 15"
2
Apple MacBook Pro (2015) 15" Intel Core i7 2.2Ghz / 16GB / 1TB
More USB 3.0 ports allow you to connect more devices to your computer that support USB 3.0. USB 3.0 is an improved version of USB 2.0 which offers faster transfer rates.