This Maplin USB A to Micro USB Coiled Curly Cable uses USB A 2.0 and micro USB B 2.0 connectors. It is mainly used to connect a large range of portable devices to a desktop or laptop computer using USB A ports. These devices would typically include mobile phones or tablets that use micro USB B connectors to either transfer data or to charge the device. The cable provides a maximum speed of 480Mbps when both devices use USB 2.0 ports. This is a coiled cable, enabling it to stay compact and also avoiding tangles making it ideal for in-car use.