Connectors are provided which have a plurality of contacts mounted within a dielectric housing. The invention also facilitates the diagnosis of other fault conditions, including, but not limited to, excessive numbers of dropped packets, hard drive crashes, high temperature readings, and inactive interface cards. A signal input of the amplifying device is connected to the output of the phase-locked loop. , during transportation, and prevents the associated failure of the computer system. A compression nut is threaded upon the rearward end and tightened thereon to force the seal ring tightly into the seal ring seat and against the outer periphery of the metal tubing.