USB to DC 5.5X2.1mm Power Cord with on/off switch USB to 5.5X2.1mm Power Cable
£4.68
And there is an on/off switch button on the cable and you can turn on/off the connected devices instead of plugging it in and out often. Pls kindly check the DC power of your devices. USB A male to DC 5.5X2.1mm DC 5V Power Barrel Plug cable.
