1、4 Ports USB Expansion: The USB hub supports simultaneous expansion of 4 USB ports, with excellent performance, no delay in mouse and keyboard. 2、Wide Compatibility: The hub has a wide range of compatibility, supports for Windows 10 8 7 Vista XP, for OS X, for Linux, etc. 3、Applicable Scenarios: Applicable to an external hard drive or any other USB device to your computer, or charger your phone as an adapter. DC hole power supply to meet your outing needs. 4、High Quality Materials: Made of high quality ABS material, the hub is sturdy, durable, not easily damaged, and has a long service life. 5、Transmission Rate: Using sophisticated production technology, the USB hub has a transmission rate of 300MB/S.