Come and see our amazing products. This USB hubinstantly add four USB 3.0 Ports to Notebook PC, Mobile HDD, and More.The advanced chipset with good thermal design, will not heat even if used for a long time.Supports Transfer Speeds up to 5Gbps (USB 3.0), 480Mbps (USB 2.0), and 12Mbps (USB 1.1). Compatible with Windows 10/8/8.1/7 / Vista / XP and Mac OS X, Linux, and Chrome OS. ( The USB 3.0 Hub Reverse Compatible USB 2.0 and USB 1.1.) Pls confirm with us about the packing info, stock color and exact production time before placing your order.