The full name of usb pd is USB Power Delivery, which means that the charger output of the USB-PD protocol is output by Type-C.
The biggest advantage of the usb pd charging port is that it supports both front and back plugs. usb pd is one of the mainstream fast charging protocols, and it is a fast charging specification formulated by the USB-IF organization. usb pd increases power delivery through USB cables and connectors, extending cable bus power capabilities in USB applications. This specification enables higher voltages and currents, delivers up to 100 watts of power, and can freely change the direction of power delivery.

The USB-PD protocol is a general standard launched by the USB-IF Association of the United States to meet the needs of modern fast charging. This standard covers the previous self-owned protocols of Qualcomm, MTK, Huawei and other companies and regulates them at the same time. Industry giants such as Google and Apple are accelerating their support for the standard, and the agreement has been endorsed by China's Ministry of Industry and Information Technology's Thiel Lab.