Ldnio Z9 20W Travel Adapter The LDNIO Z9 20W GaN Travel Adapter is a compact, all-in-one charging solution designed for international travel , supporting use in over 150–200 countries with its integrated US, UK, EU, and AU plugs. It utilizes Gallium Nitride (GaN) technology, which allows for a smaller design, better heat dissipation, and higher energy efficiency.