The invention relates to an assembly for securing at least one expansion card (comprising a half-open chassis for receiving a first circuit board of a server module having at least one first plug connector, a carrier component for receiving at least one expansion card and at least one second circuit board secured to the carrier component. The carrier component comprises at least one securing point for rotatably and releasably receiving the carrier component on the half-open chassis and at least one first bearing surface for supporting the carrier component on a second bearing surface of the half-open chassis, arranged in the region of opposite ends of the carrier component. Here, a first mating plug connector of the second circuit board is arranged such that the second circuit board is electrically connected to the first circuit board by receiving and pivoting the carrier component around the securing point.