Practical ExpansionUSB multiport adapter has 4 USB ports, which can connect 4 external devices or transmit files. The multi-ports USB 3.0 hub perfectly solves the problem of insufficient device interfaces and damaged interfaces. With USB extension hub to improve work efficiency and avoiding cumbersome switching methods. Super High-Speed Data TransmissionUSB port is equipped with new chip, which has higher transmission capacity and faster data transmission speed. The strong stability of the USB 3.0 hub also ensures that each interface can run perfectly without interfering with each other, so you will not experience lag or delay when using multiple devices with our multi USB port, making your use smoother and the experience excellent. Simple Use & High Compatibility No Installation, Plug & Play. Compatible with Windows XP / 2000/2007/2008/2010 / Vista / and Mac OS (10.3 and higher), and various personal computers. Can connect keyboard, smartphone, camera, numeric keypad, mouse, memory, card reader, scanner, printer, digital camera, USB memory, external hard drive, etc. Durable and Safe Advanced chipset with brilliant thermal design. All peripherals could work optimally simultaneously and won't damage computers or USB peripherals. High-Quality Materials This USB port hub adopts an all-aluminum alloy shell design, which makes it dissipate heat faster, avoid overheating in continuous use, and prolong the service life of the USB hub for laptop. The multiple USB port is also reinforced so that it can fit tightly with your device and prevent loosening.