DC Female to Dual Male Power Cable Pack DFRobot DC Female to Dual Male Power Cable Pack is a convenient and cost-effective way to power two DC devices with one power source. It's compatible with all DC5.5 2.1 connectors and uses a tinned oxygen-free copper wire core. This offers a more stable transmission and effectively suppresses external signal interference. The wire outer sheath employs PVC material which is insulated, anti-aging, corrosion-resistant, and flame-retardant.