The usb-c to 3. 5mm headphone jack adapter lets you connect devices that use a standard 3. 5mm audio plug — like headphones or speakers — to your usb-c devices. Features connections: usb-c compatible ipad models: ipad pro 11-inch, ipad pro 12. 9 inch (3rd generation) compatible macbook models: 12-inch macbook, 13-inch macbook air with retina display, 13-inch macbook pro -thunderbolt 3 (usb-c), 15-inch macbook pro -thunderbolt 3 (usb-c), 21. 5-inch imac -thunderbolt 3 (usb-c), 27-inch imac -thunderbolt 3 (usb-c), imac pro, mac mini -thunderbolt 3 (usb-c)