[designed for IMAC]: designed for IMAC pro and IMAC (2017 and later) models with thunderbolt 3 port. USB hub extends one USB 3.0 port to three USB 3.0 ports + SD / micro SD / TF card reader to the front. [everything within reach]: quickly add the USB expansion port to the front of the computer to facilitate access to all devices. Make your life easier instead of scratching the back of my new IMAC Pro when trying to find a USB slot [lightning data synchronization]: usb3 0 hub for high-speed data transmission up to 5Gbps. It can be used with thumb flash drive, hard drive, mouse, keyboard and other USB devices on IMAC. [plug and play]: no software or complex installation process is required. Easy to use and save your desktop space. Compatible with Mac OS 9.1 and later, windows 98se / me / 2000 / XP / Vista / 7 / 8 / 10, Linux 2.4 or later.