LDNIO Z9 3 USB Ports 20W GaN Travel AdapterWith integrated US, UK, EU, and AU plugs, the LDNIO Z9 20W GaN Travel Adapter supports electrical standards in 150+ countries. Three USB ports provide a maximum 20W output via GaN-based hardware. This model upgrades the previous Z4 by adding two extra USB ports and replacing standard silicon with Gallium Nitride for higher efficiency.