DC Power Connector with Polarity Change. Change positive polarity to negative, or negative to positive.
One end of this connector is a 5.5 x 2.5mm female jack. The other end is a 5.5 x 2.5mm male connector.
This connector is used to change polarity for a 5.5 x 2.5mm connector

Specifications:Maximum current: 8AConnectors: 5.5 x 2.5mm female, 5.5 x 2.5mm male