MacBook Pro (Retina, 15-inch, Late 2013) and later If you use a 60Hz MST display with the MacBook Pro (Retina, 15-inch, Mid 2015) with AMD Radeon R9 M370X graphics card or iMac (Retina 5K, 27-inch, Late 2014), only one additional Thunderbolt display is supported. The is the model for those who want the power, a lighter design, Touch Bar and Touch ID functionality, as well as more Thunderbolt 3 p..