The present invention relates to temporary wall systems and their production and more particularly to portable, temporary wall systems. The management module unit recognizes a port of Ethernet switch module units which corresponds to the NIC and performs network setting to the port of the Ethernet switch module based on the acquired network configuration information. The first and second transceivers are operable as bonded transceivers and wherein a third transceiver, of the plurality of transceivers, is simultaneously operable at a third data rate and the third transceiver is not bonded with any other transceiver. The magnetic pole pieces 19 are formed by blanking preparatory slots 29; coining a part or a whole of the magnetic pole shaft pieces 20 to elongate the same in a radially inward direction; and thereafter, blanking the finishing slots 30 and shaping the magnetic pole tooth pieces 21. Then the side portions are released so that they will spring back towards their static positions and clamp onto the persons head, so as to secure the letter M display onto the persons head. The present invention also provides methods for identifying patients at risk of developing a complication of pregnancy, such as preeclampsia.