This connector adapts a 5.5 × 2.1 mm DC barrel plug to a pair of screw terminals. The terminals are labeled positive and negative, with the positive terminal connected to the center contact.
Most sources refer to this style of connector as “male”, but since it has a female basket at its center, some will refer to it as “female”. Please look at the product photos carefully to make sure this is the connector you are looking for. This connector is compatible with our DC barrel jack to 2-pin terminal block adapter.