Convenient Front / Back Seat Charge. There are 4 * 2.4A USB port, 2 for front seat and 2 for backseat. With the 6ft charging cable, the back seat USB hub will reach anybody in the back seat. Easy charging options are available now for everyone Smart Identification Technology. The intelligent chip identifies any devices you plug in and matches the optimal charging efficiency for you. Our car charger is your charging expert when you are on the road Broad Compatibility. The car charger supports devices including iPhone, iPad, iPod, Smartphone, digital cameras, MP3 players, etc. Each USB port supplies 2.4 amps of power, which allows 4 devices ( iPhone, Smartphone, tablets and even Macbooks) to be charged at the same time. No need to wait for others devices to complete charging 100% Safety Guard. There is built-in fuse, which prevent your devices from power surges, over-charging, overheating and short circuiting. You can be sure you are charging safely Comfortable to use. With the backseat pocket mounting clip and rotatable round clip, this USB hub will mount neatly on the backset pocket or any round pole, it keeps your car tidy. Also with the tiny blue LED lightning around the USB port, you can easily find the car charger in the dark