Capacity: Three USB-A ports and one USB-C fast charging port provide up to 30W of charging power. Portable Design: When you are traveling with several devices, this small, space-saving design is perfect. All-in-One: Up to four devices can be charged at once with this travel wall charger. Procedures for Safety: Our 30W travel adapter has protection against overheating, overvoltage, overcharge, and overcurrent. An auto-resetting fuse that automatically disconnects at high currents and reconnects when the current returns to normal, as well as built-in protection for Smart IC chips. Details Single Output: USB-C: 12V-25A/15V-2A, 20V-1.5A, 9V-3A, and 5V-3A USB-C dauntle output: 5V-3A, 9V-2A, and 12V-1.5A 5V-2.4A for USB-A