Aukey, a common name in USB power and mobile-device accessories, has launched a new technology called Dynamic Detect. It allows a dual-port USB-Power Delivery (USB-PD) charger to recognize the number of devices connected to it and allocate its full wattage accordingly. This could allow an ultrabook to fast-charge at the full wattage it needs.
https://www.notebookcheck.net/Aukey-unveils-Dynamic-Detect-a-new-fast-charging-solution-for-USB-PD-chargers.415892.0.html