UC04 4-port USB Charger Adapter4XEM's 4-Port USB Charger Adapter comes with 3 USB charging ports and 1 Quick Charge (QC) port. This fast charging device goes even farther by incorporating the QC 3.0 technology to offer that fastest possible charge for your device. The port is able to automatically detect whichever device you have connected to adjust the voltage to give you the fastest charge. The QC port and its compact, lightweight design make this Adapter the ideal travelling charger. Any USB-charged device is compatible: Android smartphone, iPhone, and iPad to name a few. Travel charged or quickly get back to 100 percent with this 4-port USB charger.