- Connects two computers via one RJ45 lines (but only one computer's connection?can be used at a time)- Requires two couplers to work together、 one on each end of the cable. .Illustration: .<strong>=== router/switch</strong> ===>--- (one ethernet cable) -----                                                                                                                                Dimensions: 1.34 in x 1.18 in x 0.94 in<br />Weight: 0.42 oz