It is two for the number of ports required throughout the house, not just the rack. I subscribe to the belief that WiFi is for convenience, and for devices without ethernet. If a piece of gear has an RJ-45, it is getting a wire. I just eclipsed the capacity of my first switch with all of the wired devices we have, especially security cameras. I could go on and on, but hopefully you get the point. Large family, and when I built the house, I ran ethernet EVERYWHERE. I could reply with no one needs that much disk, but I won't. I am not here to judge, I am here to learn, and specifically, what I need to learn to achieve my goals.