Simplecom CH329 Portable 4 Port USB 3.2 Gen1 (USB 3.0) 5Gbps Hub with Cable Storage - Black A USB hub that can store USB cable inside itself. Built-in USB cable and cable storage case, you can carry it easily with your laptop and no need to worry about losing or damaging the USB cable when travelling. Expands your computer capability with this 4 port USB hub, you can instantly expand your USB connectivity with 4 ports, and supports data transfer rate up to 5Gbps, allowing you to add more USB devices to your computer immediately. While today\'s laptops are lighter and more compact than ever, that savings in size comes at the cost of fewer USB ports to connect your accessories.  This 4 port USB hub is a compact and portable extension to your laptop. It features plug-n-play and backwards compatible with USB 2.0 and 1.1 devices, making it easy to connect more USB accessories at the same time. Features Built-in protective storage for USB cable Expands one of your computer USB-A port into 4 USB 3.2 Gen1 (USB 3.0) SuperSpeed Transfer Rate up to 5Gbps Ultra Slim Design, compact and portable Backward Compatible with USB 2.0 and 1.1 Plug and Play, no driver required USB Bus powered, no additional power required Supports Windows XP and above (32/64-bit), Mac OS X 10.2 and above Specifications Model: CH329 Material: ABS Plastic Input:  USB 3.2 Gen 1 Type A (USB 3.0) Outputs: USB 3.2 Gen 1 Type A (USB 3.0) x4 Cable length: 10cm approx. Weight: 55g approx. Dimension: 10cm x 5cm x 1.2cm (LxWxH) Note For a stable connection and work properly, avoid connecting 2 or more high power-consumption devices, such as external hard drives, this hub should not be connected to devices consuming combined current of 900mA The hub will sync but not charge tablets and other devices that require a higher power input This hub is not meant to serve as a stand-alone charger. For safety reason, please do not connect it to any USB wall charger