USB-C Power Delivery charger. Fast USB-C Power Delivery connection. Variable output voltages (5-20 V), up to 40 W output power. Enables quick charging of smartphones, tablets, ultrabooks, and other USB-C devices. Gallium nitride transistors for high efficiency in a compact design. This USB-C charger allows for fast charging of smartphones, tablets, and ultrabooks with its high output power of up to 40 W. The use of gallium nitride (GaN) transistors increases efficiency compared to traditional silicon-based chargers, allowing the device to be more compact while delivering the same power.