This Thunderdog TDCC4 4-Port USB Car Charger charges 4 USB Powered Devices at the same time. Including: iPhone®, Smartphones, iPod®, iPad®, Tablets, MP3 Players, GPS Units, E-Readers, Portable Gaming Devices & More. Plugs into any standard vehicle 12V socket. The attached Rear Seat Charging Station provides one QC 3.0 Fast Charging compatible USB port for up to 4x Faster Charging Speed when used with a QC 3.0 compatible device. Intelligent chip automatically provides the fastest charge available to your device).