Description: Easily add up to 4 devices with the SABRENT USB 2.0 Hub. Particularly great for recent notebooks that provide a limited number of USB ports. Achieve full 480 Mbps on each port, or daisy chain multiple hubs to a maximum of 127 devices. Fully backwards compatible with the USB 1.1 products. Please Note: For a stable connection, the devices connected to the 4 Port Hub must not exceed a combined current of 5 volts 500mAh. External hard drives should be connected to an external power source. This 4 Port hub will NOT charge your devices, it will only sync them. The SABRENT premium micro USB cable is one of the most durable on the market. The cable can withstand over 10,000 insert and extractions. It is ideal for any cable use whether in your office, car, home. This can be the perfect travel companion taking up little to no space. Fast Data Transferring It ensures your devices syncs with up to 480Mb/s transferring speed.