DC Power Barrel Connector Converter - C3_To_C4 (5.5x2.1mm to 5.5x2.5mm )
This connector converter one end is a 5.5mm x
2.1mm female jack, which can plug to a 5.5x2.1mm male plug:
Another end is a 5.5mmx 2.5mm male plug:.
Plug the female end to a 5.5x2.1mm male connector, this converter tip
will converter the 5.5x2.1mm male connector to a 5.5x2.5mm connector.