Multi-protected Safety System • 15000A max and 1700J surge-suppression rating, the unit transfers optimal power and helps keep plugged-in devices safe, especially during storms and power outages. • Aerocool's multi protection safety system ensures complete protection from an electrical short circuit, overheat, electric surge, overcharging, over current and etc. • Its beautiful chassis made of PC & ABS plastic material makes it fireproof of up to 750â„ƒ. 2 USB High Power and 1 Type C Super Charging Ports • Ultra powerful 3 ports USB charger up to 40W, is able to charge 3 tablets or smartphones. • Integrated with fast charging technology that enables each port to detect and deliver ideal input current each time of up to 2.4A and max. 3A by Type C port. • Due to synchronous rectification technology, its electric energy conversion rate reaches up to 85%, which causes less unnecessary heat and is more environment-friendly. • USB ports power down in case of shortcircuit happening avoid accidents. Unique and Convenient Design • Integrated sheet copper design, high conductance and great heat dissipation, pull and plug 6000 times not loose. • The safety guard protects children from an electric shock and prevents dust. • There are natural anti-slip rubber footpads at the bottom so that it is steady and hard to move for desktop use.