Augment slot connector of augment card

The utility model relates to a connector of extension slots for extended cards, comprising a connector body, a sliding element, a returning member and a sliding member; wherein, the connector body is provided with a jack for an extended card and a plurality of terminal holes; the sliding element is configured on the connector body and is provided with a locking part which is corresponding to a first shoulder and a second shoulder of the extended card, making the extended card which is inserted in the connector body firmly connected with the sliding element; one end of the returning member is connected with the sliding element, making the sliding element after sliding can automatically recover to the original position through the returning member; the sliding member is arranged on the connector body and the sliding element in order to make the sliding element can be locked to or separated from the extended card along the axial direction. The utility model is provided with the sliding element on the connector body which can axially move to be locked to or separated from the extended card; the sliding element is made to automatically recover to the original position through the returning member, and is provided with a pulling part for the control of the separation from the extended card in order to provide the user with two selection modes of taking out the extended card.