Product features: 1 For the notebook or desktop extended 4-port USB 3.0 interfaces and 3-port USB 2.0 interface USB 2.0 interface and the maximum transmission speed can reach 480Mbps USB 3.0 interface maximum transmission speed can reach 5Gbps downward compatible with USB1.1/1.0 can be connected to a variety of USB equipment. 2 In order to solve the customers of mobile hard disk and other large power USB device cannot be used normally troubles we also specially designed power supply input interface the device power is stronger more stable operation. Products using: LT4U3FE supports connected mobile hard disk / U disk / reader / mouse / keyboard / mobile phone / tablet computer / MP3 / MP4 recorder and other USB devices can be connected at the same time 7 USB device to the desktop computer / Laptop / super / tablet computer use or charge. Product features: Simple appearance: high strength ABS build light and durable Portable: designed for desktop computer notebook super and the tablet computer design High speed transmission: follow the USB3.0 transmission protocol 5Gbps theory of transmission speed The rapid expansion of output: 4 port USB3.0 interface and 3 USB2.0 interface support the simultaneous use of 7 USB devices Super compatibility: compatible with USB1.1/USB1.0 used to support USB equipment and mobile hard disk Stable charging: support for the connected device charging the charging efficiency is higher than USB HUB Stable performance: support for various operating system support for Windows 8 Windows 7 XP VISTA Mac OS etc. Safe and reliable: the unique voltage and current overload protection effective protection of HUB and the connected device Plug and play: support hot plug plug and play no need to drive