Enable To Operate Simultaneously Connect your mouse,keyboard,U disk etc on your laptop at the same time The USB 3.0 Hub has two USB 2.0 interfaces System requirements Fit for Win95/98SE/Me/2000/XP/7/8/10/vista, Linux, OS 8.5 and above. 3Port Three downstream ports support high-speed (480Mbps), full-speed(12Mbps), and low-speed(1.5Mbps). Note Designed for data transfer, not for, don't have enough to charge 3 devices at the same time. Colour: black Material: plastic Package Contents: 2 x USB 3.0 Hub Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.