Computer having a plurality of plug-in cards

A computer capable of being provided with a plurality of system plug-in cards and peripheral plug-in cards interconnected through a bus, with plug-in places of the bus being formed as system plug-in places and peripheral plug-in places, a plurality of data lines and address lines and a clock line routed along respective clock jack contacts at said plug-in places, and with an associated clock plug-in contact on at least some of said plug-in cards, characterized in that a universal plug-in card is provided which is capable of working as a system plug-in card and as a peripheral plug-in card and which comprises a control plug-in contact which is capable of being connected with a control plug-in jack of the bus and which activates a clock output signal of said universal plug-in card which may be supplied to the clock line of said bus, via a clock plug-in contact, if said universal plug-in card works as a system plug-in card, and that said plug-in contact acts as a clock input for said universal plug-in card if it works as a peripheral plug-in card.