is installed at the bottom of the rack the succeeding chassis are initially inserted into the rack slightly above their operational position and then lowered to their final operational position as indicated by the action arrow 307 as the second and succeeding chassis are installed female fluid interconnection ports 105 of each chassis fit into the male fluid interconnection ports 104 of the adjoining chassis below thus achieving a leak tight connection between the fluid channels of adjoining chassis the chassis are secured in their operational position by mounting brackets 116 at each corner once a chassis is in place it is ready to receive a server module 108 continuing with fig3 as delineated by brackets 302 and 303 two continuous fluid passageways are formed running from bottom to top of the rack as the chassis are installed into their operational positions one of the continuous passageways 302 is used to supply coolant to a plurality of server modules 108 inserted into the plurality of chassis and the second passageway 303 is used to return coolant from the server modules thus comprising multiple coolant loops in parallel an external coolant loop supply 304 and return 305 is connected by rubber hoses to the bottom end of the continuous fluid passageways with the opposite ends of the.