( nhanced arallel nterface) Technical Report describes how to design SCSI systems. The cable lengths and loads are defined by the electrical parameters, allowing system designs to take advantage of faster cables and reduce loads. The technical report describes how to work with wide (68 Pin) and narrow (50 pin) devices on the same system. EPI includes documentation of Expanders, Bridging expanders, Switches and common connectors not documented in the standards.