Any one tried and had success with an ethernet splitter so I can add another remote camera without a complete new Cat 6 run? Tried "POE Combiner Splitter Adapter, Run 2 IP cameras on 1 Cable" from the IPCamStore on Amazon. Tired others brands and no luck. Can get one or the other to work thru device but not both concurrently. Would prefer not to make another long run thru the attic.