i believe that when you look at the ethernet plug (so the lock is on the bottom), if the orange wire is the second from the right (PIN #2) then you should cut orange, but if the green is second from the right you should cut green.
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You must login or register to view this content. . On the right it shows the two different types of wiring (T568A or T568B). When its T568A, cut green. When its T568B, cut the orange.