The 30W iStore Multi-Port Power Cube Wall Charger can simultaneously charge 1 USB-C device and 1 USB-A device. It features fully-powered independent ports, short-circuit protection, and folding prongs for convenient compact storage. The USB-C has 18W power delivery and the standard USB-A has a 12W fast charging output. Together they supply a quickly charge to smartphones, tablets and other USB-C and USB-A devices. Since there are two fully-powered independent ports, charging times will not slow down when two devices are connected.