iExcell 100 Pcs Black Ethernet Hub Port RJ45 Anti Dust Cover Cap Protector Plug

These pop in nicely and stay in place, while being easy to remove. There's really not much more to say. They do what's claimed in the description, and they do it well.

These are excellent. I am using them in my server rack and switches that have empty plugs so dust won’t fill up in them. They fit snug and are easy to get in and out.

These plugs do plug things. Work fine!

It's a soft plug for unused switch/router ports. They work fine...easy to insert and easy to remove and will keep the dust out of the ports. Not much more to say.

The quality control on the finished look isn't high, but they fit which is what matters to me. (Reference the first photo which shows a not fully cut one)In my switches they go right right next to one another with no overlap which is great.The little nub for removal is worthless as it doesn't protrude enough to be useful. I just use the lip. Due to this, if the port is recessed these are hard to remove.