Thunderbolt 3 Port to Thunderbolt 2 Adapter for 2016 Macbook Pro Display MC914 & Hard Disk Case; Please note the adapter only can work for 2016 Macbook Pro Thunderbolt3 USB-C 40Gbps Port, Cannot work for the USB-C 5Gbps/10Gbps Macbook.; The thunderbolt2 port can connect the Hard disk, Apple Displays. (it cannot connect the mini dislayport device. it can not work for mini-DP mode); The Thunderbolt 3 to Thunderbolt 2 Adapter lets you connect Thunderbolt and Thunderbolt 2 devices — external hard drives and Thunderbolt displays.; for example — to any of the Thunderbolt 3 (USB-C) ports on your 2016 MacBook Pro.