These brackets mount a Netgear switch (GS116E shown, but the dimensions are all similar) in a Leviton Structured Media Center. (There's a new model of that switch, the GS116Ev2, which adds a web administration in addition to the custom Windows tool. The monitoring, QOS and VLAN capabilities are great for the price/size)You will need Leviton 47615-NYL Push-Lock Pins for Structured Media Centers to attach these brackets to the Media Center. Clean up the holes enough that they will accept the clips and then push the pegs in to the first notch. After positioning the bracket in the media center, push the pegs in to the next notch and the bracket will be secured. You'll want one shelf (for the bottom) and as many brackets as you feel you need for stability. I only used one for their largest switch and it is plenty.