The PNY Dual USB Port car charger is compatible with today's most popular devices including the iPhone®, iPad®, Android™ devices, BlackBerry®, and Windows® 7 Phones. This charger allows for charging of iPads and Android tablets, while also working with smartphones making this the only car charger needed for your mobile devices. Since it uses a standard USB connection it is universally compatible by using the USB cable that was included with your device. Optimal charging at speeds up to 1 Amp and 2.4 Amp per port for smartphones and tablets respectively, with a max charging speed of 3.4 Amp overall.