Okay, I am going to buy the recommended powered splitter and put it in the new outside cable box. I am going to plug the basement coax cable into the "out 1/power in" port. Inside the basement, I will attach the power inserter into the coax wall port. From the power inserter, I will connect a coax cable to the ac adapter and plug it into a power outlet. I will also plug the new WCB6200Q into the RF out port and connect the mini to the WCB router. Sound right? Attached is my drawing. 1.What splitter should I put in the Attic? Should it be the existing powered one? We are going to add a mini to one of the 2nd floor bedrooms. Should I not cable the 2nd floor bedroom that doesn't currently have a device, or can I just terminate it at the wall or splitter? 2. How do I confirm whether the device already in the outside cable box is a POE filter (see attached photo) and if it is, should I remove it when I connect the new powered splitter? 3. Is the 2way splitter that I put in the office last night the correct kind? (See attached photo.) 4. The recommended Actiontec WCB6200Q device is $150. Is that the best option for basement wifi combined with the mini?