Abstract: The installation system accommodates modular circuit boards, each board providing several RJ-11-style jacks. The circuit boards are secured to the front panel in a parallel, spaced apart configuration using mounting brackets which have metal shield plates to minimize cross talk and radio interference. Connections between a central computer and peripheral devices are conveniently made by plugging jumper cables into selected jacks. The jacks are arranged in a compact matrix with all entrance cables being provided with solderless connectors and being laid side-by-side and secured to the circuit board with tie straps. A method of interfacing a computer to peripheral devices is also disclosed.