An assembly for a computer system includes an insert housing with a housing floor; a power supply unit arranged on the housing floor and having a plug contact; a main circuit board arranged within the insert housing substantially parallel to the housing floor; and an angle plug having a mating plug contact and a connection region for connection of the power supply unit to the main circuit board, wherein the angle plug, when connected to the main circuit board via the connection region, connects to a top face of the main circuit board at a first installation height of the main circuit board and connects to a bottom face of the main circuit board at a second installation height of the main circuit board so that height compensation with respect to the plug contact of the power supply unit is established in each case.