The SenseVision USB 3.0 Type-C to USB Type-A data and charging hub is a compact tool which adds four common USB Type-A ports to your USB Type-C enabled device. Many of Ultrabooks and laptops lack a sufficient number of expansion ports, thus making it difficult to use your favorite peripherals like mice, USB storage and external HDD's at the same time, while no port is left to charge your smartphone, headset or other device. This USB hub gives you four additional USB Type-A ports for data and power. With this hub, battery charging can be done safely for a wide range of portable devices. The current limit of USB charging is 500 mA for USB 2.0 and 900 mA for USB 3.0.