To provide a receptacle connector in which holding power can be easily improved even if the same has a connector fixture to a board.SOLUTION: A recessed part 203 of a housing 200 comprises: two lateral walls 202a extending in an alignment pitch direction Y; a bottom wall 201, located on a board mounting face side, which couples the lateral walls to each other; and two coupling walls 202b located on both ends in the alignment pitch direction Y. A signal contact 220S has: a first contact part which comes into contact with a plug connector formed in the vicinity of one free end side; a connection part which is mounted on a board formed on the other free end side; a second contact part which extends from the first contact part and is disposed in continuous with a recess shaped along the recessed part 203; and a curved elastic part formed between the second contact part and the connection part. The connection part of the signal contact 220S is disposed on one side of the two lateral walls 202a. A power supply contact 220P is a separate body from a fixture 230 and has a power supply structure. Further, the power supply contact 220P is wider than the signal contact 220S but has substantially the same structure to the signal contact, except for the width.SELECTED DRAWING: Figure 1B