Lindy USB Type A Port Blocker Key - Pack of 4 Blockers, White

As my laptop is almost on the road I ve found this product very useful. Extra protection. Good stuff. I am using continuously. Thx

They work, very difficult to remove without the key and if the socket is slightly set back they are close to impossible without the key. The only issue is there are only 4 or 5 keys available and they are easy to obtain so any body determined to get into your system will not be stopped. Especially if premeditated.

Cheap and cheerful, do the job of blocking USB ports.

Works great, but be mindful that not all USB ports are created equally and with enough skill and a pair of tweezers these blockers can be extracted from the blocked USB ports with ease.

Unfortunately on a MacBook Pro, these usb port blockers push too far into the port, which renders the extraction tool useless. I also then realised that they can be very easily extract with a pair of needle nose tweezers.

Easy device to use

Just what i needed, very durable and able to fit and secure usb's, need to be a bit delicate when using as the connector is very thin

gut aber teuer das Preis-Leistungsverhaeltnis ist eher maessig (daher 1 Stern abzug). Leider ist man gezwungen den hohen Preis zu bezahlen, wenn man seine Rechnerports mechanisch verschliessen muss, Das Schloss erfuellt aber seinen Zwecke, obwohl es auch mit entsprechendem Werkzeug leicht umgangen werden kann.

Je voulais simplement empêcher que d'autres utilisateurs n'utilise mon ordinateur de travail. Ça marche très bien

Muy buen producto, justo lo que esperaba, perfecto para no emplear programas de bloqueo de puertos o modificación al S.O. y fácil de usar, lo recomiendo.

I get the concept. HOWEVER, the key does not go DEEP enough in a standard USB port WHILE the blockers DO. When this happens, the key can't reach the blocker to pull it out. The blocker WILL go deeper without the key (because: physics). I now have a bunch of USB ports that I have to unblock by trying to pry them out. Still earns enough stars for me ★★★☆☆, as my purpose is semi-permanent blocking. Using this for portable chargers and power banks (because it's hard to find versions without USB-A, which I have no need for because all my cables are now USB-C, but I digress) I tried the silicone dust covers, but they go out on their own.

These devices do not lock, but block. Better than nothing, but the placement tool is more elaborate than necessary. You can place and remove the blockers without engaging the locking mechanism.