To conveniently charge your MacBook or MacBook Pro from a wall outlet, pair the USB-C Charge Cable with a compatible USB-C power adapter, sold separately. Apple recommends pairing MacBook with USB-C port with the 29W USB-C Power Adapter. Apple recommends pairing the 13-inch MacBook Pro with Thunderbolt 3 (USB-C) ports with the 61W USB-C Power Adapter. Apple recommends pairing the 15-inch MacBook Pro with Thunderbolt 3 (USB-C) ports with the 87W USB-C Power Adapter.