Got a single ethernet cable and want to install multiple PoE Cameras? This lil device will do the trick: Price Paid: $30 w/Prime Shipping Think of this as a Wall-Mountable PoE powered 5 Port PoE switch This takes a PoE+ (802.3AT 25.5W) and splits it into four PoE (802.3AF 14.5W) ports giving you ~6W evenly per port which is plenty enough to run most fixed IP Cameras. If your looking for a PoE+ injector this should do the trick: Amazon.com: BV-Tech POE-I100G Gigabit Single Port 30W PoE Injector (Black): Computers & Accessories Most NVR's w/built in PoE already output PoE+ for use w/PTZ, however few of the cheap affordable PoE switches do. I installed this in my Garage to split the existing cable monitoring the inside of my cat-door so I could hookup the varifocal turret.. I also intend on moving an older camera into the garage for watching the bay and another starlight watching other side of driveway.. So eventually I intend to use all 4 ports, and I also wanted several PoE ports near the Varifocal Turret for future reviews, as thats the camera to beat.. I already have 4 ethernet cables in the garage and really didnt want to run 4 more. I have 4 cameras hooked up for testing right now, in daytime its pulling 12W-14W total from my midspan.. half of the cameras im testing dont have IR and at night I'm seeing 14-17W combined.. might be as high as 21W if they all had IR.. as always YMMV. Daytime: Night Time (w/2 IR Cameras and 2 non-IR Cameras): Typically I'd suggest running more ethernet cable, its more cost effective and dont have this single point of failure.. but if your in a pinch, this should do the job just fine.. just dont expect to run any PTZ's off it.