Ok experts question for you... currently in my boat are the grey with yellow end ethernet cables connecting my units to SS3D box. Creating a "lab" here in the house where I can hook up units to play with settings, test, etc... Ordered a 15' ethernet and it is black with yellow ends. Are these the same cables? I cannot get either of my units to detect each other (Live 12 and Live 9) when I connect the cable to the units in any configuration. Did I really get a bad cable out of the box? Or are these black cables different in some way?