An arrangement for a blade server slide-in module includes a motherboard with a plug connector, a riser card inserted in the plug connector of the motherboard, a carrier plate, in which there is a first opening, is fixed substantially parallel to the motherboard in the blade server slide-in module, the first opening being aligned with exposed plug contacts of the inserted riser card, and a retaining element having a main body in which there is a continuous, second opening, wherein the retaining element is pushed onto the riser card in a positive locking manner by the second opening and locks with the carrier plate so that the riser card is securely mechanically fixed to the carrier plate and the plug contacts of the riser card are accessible via the second opening.