* Great Compatibility: 4-port USB hub applies to various devices: laptop, pc, Mac, XBOX, PS4, flash drive, keyboard, mouse, card reader, Mobile HD, printer, camera, USB fan and USB cables * USB3.0 Super Speed: With high efficient USB3.0, 4-port USB splitter provides 5 Gbps stable data transfer and is compatible with 2.0/1.0. It's been tested reading, writing speed at 371.19MB/s, 245.97MB/s with USB3.0 device and 43.18MB/s, 40.84MB/s with USB2.0 device * 4-ports at Same Time: This usb port expander for laptop provides stable performance for 4 ports work simultaneously without any pressure and the temperature keeps within moderate range * Premium PCB Quality: With years of experience in multiple port hubs, to keep PCB signal channel from interfering with each other is important. Our hub is no disturbance for the 2.4G or WiFi signal when watching video on line and while data transfer.