This standard Flex cable should be used to connect a pedal to an outlet of a CIOKS power supply. Type 3 Flex cables are fitted with a yellow center negative 5.5/2.5mm DC plug. You should use this cable type to power Line 6 units like the HX effects, HX Stomp, HD Bean, POD HD 500X or older POD HD units, Firehawk FX, Amplify FX100, AC pedals needing the same plug size and a few other DC units. Please always check the plug size and polarity needed as stated on the pedal itself or in the manual.