Coocheer&reg; Super-speed USB 3.0 4-port Compact HUB with Built-in 1ft USB 3.0 CableBlack 4 x Super-speed USB 3.0 ports, each provides 10 x faster speed than USB 2.0 Compact size and portable, ideal for laptop, ultrabook and tablet PC. Also works with USB extension cable and backwards compatible with USB 2.0/1.1 devices Plug and play, no driver required, works with Windows XP/Vista/7/8. Mac OS X or above. Linux 3.0 or above. NOT support Windows 8.1. Supports hot-swap Parallel vertical layout to allow large card readers and devices with extra width Package Content: 1 X Coocheer USB3.0 hub (Black); 1 X User manual. 18 Months warranty and 24h email support.