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Jiafeng?Super Speed 4-port USB 3.0 Hub 1 Charge-Only Ports - 5V 2.1A 12V 4A Power Adapter
Fully compliant with four USB Universal Serial Bus specifications 30 20 11 and Revision 10 with the data rates 5Gbps 480 Mbps 12 Mbps and 15 Mbps
Supports Microsoft Windows XP Vista 7 8 Mac OS 91 Mac OS 102 or above Linux No installation of drivers required for Windows XP Vista 7 8 Mac OS 102 or above Linux For the version Mac OS 101 or below you need to install the driver provided by Apple
4 USB 30 ports offer 09A each Built-in surge protector Supports Plug and Play and hot swapping LED indicators display the status of DC power supply and USB connections
Only one additional power ports 21A supply enough current to charge a tablet or a smartphone at full speed
Plug-n-Play no driver or setup required