With phone manufacturers trying to save space to make phones smaller, they are reducing the number of ports on a phone to just one USB C port. This means that adapters have to be purchased in order to use accessories etc. The USB Type C to Type C adapter with Power Delivery (PD) has multiple functions when connected to your device.Both ports for power delivery (when connected to a charger, two devices can be charged)One port for audio and other for PD (when connected to a phone/tablet)One port for data transfer and other for PD (when connected to a phone/tablet)A good example of this would be to listen to music from your phone/tablet with USB C headphones and charge at the same time. PLEASE NOTE: Do not connect two chargers to charge one device. USB Type C to Type C for audio and Power DeliverySupports Type C audio and PD adapter simultaneouslyType-C audio accessories and PD adapter can be freely connected to either Type C portSupports PD 2.0 60W