This USB3.0 4-Port Hub offers user to increase to a 4 X USB3.0 Connections. The transmission speed of USB3.0 could be up to 5.0Gb each second, backward with USB2.0 and USB1.1. If you own a USB3.0 device such as HSB3.0 Hard disk, this is the item you sure needs. Features: Up to 5Gbps data transfer rate Compliant with Universal Serial Bus 3.0 specifications Supports USB 3.0, and backwards USB 2.0 and USB 1.1 devices Hot-swapping feature allows you to connect/disconnect devices without powering down the system No device drivers required for Hub installation LED to indicate Hub power System support: 2000/XP/Vista/Win7 Connectors : 4 X USB3.0 downstream; 1 X USB3.0 upstream; 1 X DC Jack Package Content : 1 x USB 3.0 Hub 1 x USB 3.0 Signal Cable 1 x Power Supply (Note : Photo attached is for reference only, it may be slightly varied in items of colour, shape from the actual item delivered from time to time)