Overview of the Apple USB-C Power Adapter 140W: Compact, Portable, Fast, and Efficient Charging Design in White At home, at work, or while traveling, the 140W USB-C Power Adapter provides quick and effective charging. A wide variety of USB-C charging cables are compatible with it. Apple suggests using a USB-C to MagSafe 3 cable to connect this power adapter to your 16-inch MacBook Pro (2021).