A connection arrangement for a mainboard having at least one memory card connected to a processor and two series of FBD memory modules connected to respective FBD channels in the memory card by means of FBD connectors using a daisy-chain arrangement. Each channel of the memory card is connected to a linking module to another card the linking module receives two separate FBD channels and includes a FBD type connector with two series of electrical contact pins respectively connected to two paired channels of the memory card. The FBD connector is mounted on the back of the memory card so as to be associated with a connection interface providing the connection to a mainboard. The mainboard is also equipped with a connector of the FBD type designed for inter-card connection.