There exists a 1.35mm DC jack port for an exterior power source but its related on to the 5V line so if you have to externally power, we recommend prying open up the situation and reducing the red 5V line from your USB https://www.leo-brand.com/products/visiontek-vt2900-usb-c-dual-system-kvm-docking-station-with-100w-power-delivery