A cables which split a single output from a power supply to enable you to simply power 4 devices from a single power supply. Use in conjunction with any of our power supplies that are fitted with a 2.1mm DC output connector. They have a 2.1mm socket on the input and 4 way 2.1mm connectors on the output. These 2.1mm splitter cables enable you to power multiple units from just one power supply. Also works with the screw terminal adaptors.