50PCS RJ45 Anti Dust Cover Cap Protector Protects Ethernet Hub Port by FENGQLONG (Black-Large)

Works as intended. Strong, won't fall off and fits in perfectly into empty RJ45 ports. Prevents dust from getting in and overall gives an organized clean appearance.

They are great and have enough space ro place tiny labels on them.

These work and definitely get the job done but they don’t fit snugly as I would’ve liked. A little bit of vibration and they might fall out.

Guess I should have read people’s comments before purchasing. The description of being soft silicone is false advertising. These are hard plastic…

When they fit, they work well, but several switches (mostly TPLink) and one router (Ubiquit), they are too loose and fall out easily. We use these in mobile setups and they help keep volunteers from plugging in something wrong, but they often fall out during transport and setup.

Too loose... keep falling out of the port

I have to take partial blame the product because I did not check with the seller whether these are hard plastic or soft rubber parts. These turned out to be plastic parts. I tried them on RJ45 ports of different devices, my laptop, desktop, ethernet switches, etc. Most of the time they did not fit snug into the connector. when I shook the unit or tilted it downwards, some dust caps fell off. Since inner dimensions of RK45 connectors can slightly vary, a plastic dust cap is not a good choice, silicone rubber would be better. Even when a cap did not fall off when I shook or tilted a device, the one I plugged into my laptop fell off at the slightest brushing against it (like while carrying it around) Also these are too expensive for plastic parts. (I bought silicone dust caps for USB ports for a much lower price). Next time I would go for soft rubber dust caps. These do have one nice feature that is a knob that makes it very easy to hold them and plug-in or pull-off. (Some other products have no such knob and it can be difficult to pull off the dust cover because there is nothing to grip and pull)

Extremely loose and falls out easily.