With the Apple 20W USB-C Power Adapter (power supply unit) you can charge your iPad Air quickly and efficiently at home, in the office or on the go. The power adapter is compatible with every USB ‑ C capable device. For optimal charging, however, Apple recommends using it with the 11 "iPad Pro or the 12.9" iPad Pro (3rd generation). You can also connect it to an iPhone 8 or later to use the quick charge function.