panels has a plurality of apertures 4 punched therein and each aperture 4 is arranged to take a cable terminating device 5 to which the individual wires 7 of a cable 8 are terminated as seen in fig1 the cable terminating device 5 is normally of a two part construction having a main body 51 and a front cover 52 illustrated in phantom in fig1 is a cable tidy tray 10 to which the cable 8 and other cables not illustrated connecting to the patch panel 3 c can be secured by means of cable ties not illustrated or equivalent arrangements turning now to fig2 the cable 8 passes through a cuff or boot 12 and is connected to the main body 51 by means of wiring contacts 13 the patch panel 3 c has a front face 31 and a rear face 32 a front cover 52 is provided with two pairs of snap engaging ramps 15 and 16 respectively the snap engaging ramps 15 enable the front cover 52 to be pushed into the aperture 4 and snap engaged with the patch panel 3 c the snap engaging ramps 16 cooperate with corresponding indentations 18 which therefore enables the main body 51 to be snap engaged with the front cover 52 the cable terminating.