StarTech Dual Port USB Car Charger Charge two tablets simultaneously, in your car. This 2-port car charger lets you charge two mobile devices simultaneously, while youre driving. The charger can deliver 24 watts of power in total, sharing 4.8 amps of power between both ports. This means that you can charge two tablets at the same time. The dual-port charger features Smart IC technology, which enables it to identify what type of device is connected to each port. By recognizing the attached device, the charger delivers the optimal charge that's specific to each device. The charger supports USB Battery Charging Specification 1.2, which ensures compatibility with a broad range of mobile devices, including the Apple iPhone and iPad, the Microsoft Surface tablet, the Samsung Galaxy Tab, Nexus phones and more. When youre traveling with a passenger, you can charge their device as well as yours, and ensure that both of your mobile devices are ready when you arrive. The USB2PCARBKS is