100PCS USB-A Port Blockers with 5 Keys-Removable Type-A Data Protection - Dust & Moisture Resistant Shield for Laptops, PCs, Gaming Devices & Tamper Protection（White）

Excellent port blockers very easy to install they did exactly what I needed them to do.

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Yes they're just pieces of plastic with a weird key, but it does work and they aren't hard to get out if you have the key.

These were a complete waste of money and I would leave no stars if I could. I cannot return them because 2 of them were torn up trying to get them out of the computer along with another that was torn up trying to get the key in because the key hole wasn't big enough for the provided key. We had to use an eyeglasses small screwdriver to make the hole bigger and use pliers to pull them out. I bought them because the metal ones were more expensive for less but it used the same key. Because the entire thing is plastic including the part inside the key is supposed to press on to pull it out it just doesn't work like it should. But they are easy to put in on anything with a usb slot including tvs, any computer, etc just don't expect to get them back out. So in the end still had to spend the extra money for the metal ones anyway but at least got an extra key out of it. So we put them in my elderly mother's laptop and her older flat-screen tv just to keep dust and stuff out since she won't be needing those slots anyway.

Works great & reasonably priced, definitely recommend