A lady lived by a stream and there was a deer drossing sign next to her backyard. Lately, the poplalation of deer had increased so much that the number of deer crossing her property were becoming a nuisance. The lady called the Parks Department and asked them if they would move the sign farther away from her backyard so that the deer would not longer cross there.
If the arrow bothers you get some black electical tape and tape around it, because it makes about as much sense as the deer sign.You can connect it either way; some cable designer was just being cutsie