Massive Expansion: Get more out of your MacBook’s single USB-C port, with 3 extra USB-A ports. The Need for Speed: Transfer movies and music in seconds with 5 Gbps transfer speeds, and enjoy full-speed pass-through charging while using the hub, with USB-C Power Delivery. Please Note: May not work with mice and touchpads while connected to MacBook Pro 15” (2016-2018) and MacBook Air (2018). 6 Months Warranty