A disk array apparatus using an SAS can transfer data without lowering a transfer efficiency of data even if rates of a plurality of physical links connected to a controller and storage device are different. Human monoclonal antibodies specific to the early activation molecules, and methods of use, are also disclosed. The top array comprises a plurality of high melting solder joints and a plurality of low melting solder joints, while the bottom array comprises a plurality of high melting solder joints only. If the link is a fiber optic link, the receiver can convert the data transmitted over the link into to a second stream electronic serial data that is transmitted at the second clock rate and then to the output data stream.