Product description Color: black Product features: classic / high-end design, mobile phone stand No external power supply required, disk-to-disk data transfer, Support hot swap, low power consumption, the product is suitable for U disk, card reader, USB mouse, USB keyboard, scanner, digital camera, digital video camera, USB sound card, hard disk box and other equipment, etc. Suitable for desktop computers and notebook computers, supports hot swapping, low power consumption, can read portable devices Operating system: Windows 98SE / ME / 2000 / XP / WIN7, Macintosh OS 9.0 or above Features: 1.Convenient and Portable - USB 3.0 Hub with 4 Ports.Compact design allows it to be carried anywhere 2.Plug and Play - Simple, yet functional. Plug in your peripherals: Mouse, Keyboard, USB Flash drive, HDD and more. High speed data transfer and connections. 3.Small Design - Easily store the cord in its built-in storage, ideal for travel; minimize the risk of scratching other devices. 4. Backwards Compatible - Supports transfer speeds up to 5Gbps (USB 3.0), 480Mbps (USB 2.0), 12Mbps (USB 1.1). 5.With mobile phone standIt is also a mobile phone stand which is convenient for you to chase dramas after work, relax your mood, easy to use and easy to carry.