The adapter work for one PD power in to Steam and one power out to cooler and light. The adapter also work for Steam one USB3.1/USB2.0 out and one power out to cooler and light. Type C connector is the new design for USB 3.1,Reversible Design for Type C connector. Reversible plug orientation Cable direction. Support 10Gbps data transfer rating. Support external USB device for Tablet Steam Phone Disk.