The extra 40 lines are all tied to ground. The cable was constructed from 10 pieces of Cat5e with one line from each twisted pair going to ground. The construction is as tedious as it sounds and ...

Although swapping a Cat-5e patch cable with a Cat-7 one between a network ... albeit over fairly short distances (~30 meters). In general use you will find Cat-6(A), as well as Cat-7(A), with ...