SDP, CDP (BC 1.2), DCP (BC 1.2)

All listed port types can be used with USB-A and USB-C.

SDP - Standard Downstream Port

• A standard USB downstream port without BC 1.2 charging-port features

• Typically found in desktop and laptop computers

• Supports USB data transfer

• USB 2.0: up to 0.1A before configuration and up to 0.5A after configuration.

• USB 3.0: up to 0.15A before configuration and up to 0.9A after configuration.

CDP - Charging Downstream Port (USB Battery Charging 1.2)

• Designed for charging at higher current through a USB port

• Used in desktop PCs, laptops, and other devices

• Provides up to 1.5A

• Supports USB data transfer

DCP - Dedicated Charging Port (USB Battery Charging 1.2)

• Designed for chargers

• Provides up to 1.5A

• Does not support USB data transfer