This 2-port USB car charger kit includes 0.5meter USB to dock sync & charge retractable cable for iPod/iPhone/iPad. It has smart chipset that recognize what type of devices is connected for proper charging and auto-allocations that allows it to operates as dual-port with 1.7Amp each port if two devices are connected or single-port with 3.4Amp for faster charging. Supports USB-C, Samsung Galaxy, Apple legacy devices with 30-pin port, and other Android devices. Works with iPhone 1st Gen, 3G, 3GS, 4, 4S, iPod Touch 1st - 4th Gen, iPad 1, 2, and 3. Features LED status light indicator. FCC, CE, e-Mark and RoHS compliant. (Connectors: 2 USB A Female / Input Voltage: 12-24vDC / Output Voltage: 5vDC 3.4Amp)