And when two devices are connected, such as a USB PD charger and a phone, the two devices exchange information via the USB-C port - called Power Rules - which help them negotiate the highest possible power transfer, and then pick a suitable current and voltage.Īll this flexibility may translate into much faster charging, but the actual speed depends on the charger and device itself. That means you can potentially use a USB PD port on a phone or laptop to charge a peripheral in addition to simply being charged. It offers a lot more flexibility than previous USB charging standards - for example, USB PD acts as a two-way, port, able to both receive and deliver power.
Power Delivery is a relatively new specification that is intended to serve as a single charging standard for all USB-C devices.
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