Portable USB Power strip: The AHRISE desktop charging station with 3 AC outlet and 4 USB ports (5V/4.8A), ON/OFF switch and 5 Ft extension cord(125V/10A, 1250W). Fast & Smart Charging: Build in smart charging technology, This USB charger will detect your devices automatically and deliver the fastest charge speed up to 2.4A ( 5V/2.4 Max Each Port ), 4 USB ports ( Total 5V/4.8A/24W) can charge almost any USB device (smart phone, tablet, Amazon Kindle, fire stick, e-reader, blue tooth headphones, portable speaker etc) capable of fully charging 3 iPhones within 2 hours simultaneously, and 4 cell phones in less than 3 hours. Safety and Certificate: ETL safety certified, with extension cord certified by UL. The ON/OFF switch can turn off the power, Environmental protection and fire-resistance PC shell with flame retardant at 1382℉ makes it more durable and more secure.