Charges up to 10 smartphones, tablets or other USB power devices simultaneously. Smart IC technology automatically detects the power requirements of your connected device(s) and delivers the maximum power output for fast charging and optimal charging efficiency. Each charging ports delivers intelligent fast charging current up to 2.4A per port. Ultra slim space saving design makes the charger easy to carry, place it anywhere in your home, office or take it with you on-the-go. Modern safety features to protect your device from unforeseen power surges include Over-current protection, Over-voltage protection and Short-circuit protection. Integrated power switch saves unwanted power use when not charging devices and saves you the inconvenience of unplugging the charger from the power outlet. Compatible with worldwide AC voltage from 100-240V (additional power plug adapter required when used outside U.S. region, purchase separately).