Charging electronic devices in a car now no longer needs to be limited to front seat passengers only, with CarHub-4. Designed with a 6ft cable, and 4 USB ports, you can seamlessly charge 4 devices simultaneously while on the go. 2 front seat USB ports charge smartphones at optimum speeds with shared 2.4A, while the extendable hub allows backseat passengers to charge 2 tablets simultaneously at 2.4A per port.