A data transfer system has a bus having a plurality of bus lines, with the bus lines including at least a first and a second group of signal lines and at least a first and a second clock line. A host device is coupled to the plurality of bus lines. A first connector generates and outputs a first source synchronous signal on the first clock line and a first plurality of data signals on the first group and a second connector generates and outputs a second source synchronous signal on the second clock line and a second plurality of data signals on the second group. The host device is operable to respond to the first and second source synchronous signals and the first and second plurality of data signals to latch the first plurality of data signals with the first source synchronous signal and to latch the second plurality of data signals with the second source synchronous signal.