1， high speed usb 3.0 4 port hub， each interface transmission speed of up to 5 gb / s with this usb 3.0 distributor can be up to 4 usb devices to your system support. you may continue your existing usb 2.0 and usb 1.1 devices to operate. no driver install is needed.<br />2， each port with a separate switch， energy saving and environmental protection; each port with a power display， the use of more convenient.<br />3， with 60 cm long usb3.0-datenkabel， easy to transport and easy to use;<br />4， multi band 1 usb smart ladeanschluss， installation 2a / 1a automatic adjustment chip， in accordance with the demand for smartphones and other devices tax big / small power;<br />5， for the external mains reserved， when a large usb device at any time with an external power supply is connected to supply needs to be increased.<br />6， extended 4 port usb3.0-schnittstelle， fast ladeanschluss.<br />7， supports windows xp， macos 10. x， is a free usb 3.0 anschl?ss on computer system.<br />notes:<br />to ensure maximum performance of usb3.0， your computer， peripherals， cable and software to achieve the all usb 3.0 support. if a usb 2.0 port connects， it will only in the speed of usb 2.0 only.<br />some usb3.0 devices and 2.4g wireless devices (wireless mouse， keyboard， etc.) requires a direct connection to the host usb 3.0 and 2.0 ports， might not these hub compatible.<br /><br />Package Included:<br />1 x 4 port usb 3.0 hub<br />1 x eu power supply