1. Usb Hub: instantly add four USB 3. 0 Ports to for iMac, , Mac Pro/ Mini, surface Pro, XPS, notebook PC, mobile HDD and more. 2. [High-speed transmission] The standard USB3.0 theoretically can provide you with a high-speed transmission speed of up to 5Gbps, and transfer massive videos, photos and files in seconds. Greatly improve your work efficiency. The theoretical speed of USB2.0*3 is 480Mbps. There are 3 USB2.0 ports as standard, which can meet your multi-port expansion needs. 3. [Ultra-compact and lightweight] 4-port USB hub is made of high-quality aluminum, sturdy and durable with good heat dissipation. And you want to save space, even at home, it looks great and tidy, with fewer connections, which is also helpful when moving a laptop. Very suitable for family, office and business travel. 4. [Powerful Kernel] The kernel is powerful enough, suitable for fast transmission without delay. Supports connection of 4 USB ports. 5. [Plug and Play] No need to install, use this all-in-one USB hub to instantly expand your connectable peripherals. Product name: USB hub Model: J-UH302 Interface: USB to 4 PORT USB3.0 Transmission rate: 5Gbps size: 10 x 2.5 x 1.5cm Material:PVC+metal colour:black Package Contents: 1 x USB hub Only the above package content, other products are not included. Note: Light shooting 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.