To the computer, the computer special charge and discharge management line for the battery charge and discharge operation, lithium batteries are more delicate, layers of care to charge and discharge
In fact, this interface is also a Type-C interface, but support expansion protocol, you can charge mobile phone notebook, you can see The Times Type-C docking dock, small appearance, metal interface types can be expanded a variety of interface devices, PD port support 87W MacBook Pro charging, let you play while charging