Designed for iMac Pro and iMac (2017 and later) models with Thunderbolt 3 ports.USB Hub extends one USB 3.0 port to three USB 3.0 ports SD/Micro SD/TF card reader to the front.: Quickly add a USB expansion port to the front of your computer for easy access to all devices.Make your life a lot easier and not scratch the back of my new iMac Pro while trying to find a USB slot!The USB3.0 hub supports high-speed data transmission up to 5Gbps.It works with thumb flash drives, hard drives, mice, keyboards and other USB devices on the iMac.No software or complicated installation is required.Easy to use and saves your desktop space.Compatible with Mac OS 9.1 and higher, Windows 98SE/ME / 2000 / XP/Vista / 7/8/10, Linux 2.4 or higher.