A connector fixture includes a fixture body and a positioning member. The fixture body includes a fixing portion, a retaining portion, and a contact portion. When the fixture body is attached to the first connector, the fixing portion determines the relative position between the fixture body and the first connector in a z-axis direction. The contact portion determines the relative position between the fixture body and the first connector in a y-axis direction. The positioning member determines the relative position between the fixture body and the first connector in an x-axis direction. The positioning member is configured to be separable from the fixture body.