MagSafe 3 returns the magnetic connector to MacBook Pro 14-inch and 16-inch (2021+) based on USB-C PD protocol, enabling fast charging at up to 140W with a proprietary magnetic connector that also allows USB-C charging.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | GND | Ground | GND |
| 2 | VCC | Power up to 28V 5A | PWR |
| 3 | ID | Adapter identification and PD communication | BUS |
| 4 | GND | Ground | GND |
| 5 | VCC | Power | PWR |
MagSafe 3 returns the magnetic connector to MacBook Pro 14-inch and 16-inch (2021+) based on USB-C PD protocol, enabling fast charging at up to 140W with a proprietary magnetic connector that also allows USB-C charging.