The Split Flex cable should be used to power two pedals of a single outlet of a CIOKS power supply. Two connectors at the pedal end are both 5.5/2.1 mm center negative DC plugs. The two pedals powered with Split Flex will receive the same voltage. So if you use a 9V outlet, both pedals will be powered with 9V. Make sure that the sum of the two pedals current draw figures is below the maximum rating of the outlet used. It is recommended only to use Split Flex with low current analog pedals to avoid possible noise issues.