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🔒 Lock your data fortress with Lindy’s USB Port Blockers — because your security deserves no compromises.
The Lindy USB Type A Port Blocker Pack of 4 offers a robust, physical security solution to prevent unauthorized USB access and malware injection. Featuring a key-lock mechanism with color-coded keys for zone management, these compact blockers require no software, making them ideal for sensitive environments like government and enterprise. Crafted from durable ABS material and backed by Lindy’s trusted 2-year warranty, they provide an easy, instant way to safeguard your USB ports from tampering and data theft.


| Asin | B000FKP8B6 |
| Best Sellers Rank | 37,751 in Computers & Accessories (See Top 100 in Computers & Accessories) 9,623 in USB Cables |
| Brand | LINDY |
| Colour | White |
| Connectivity Protocol | USB |
| Control Method | Touch |
| Controller Type | Hand Control |
| Country Of Origin | Taiwan |
| Customer Reviews | 4.2 4.2 out of 5 stars (31) 4.2 out of 5 stars |
| Finish | Unfinished |
| Included Components | 4 locks and 1 key |
| Item Dimensions | 10 x 120 x 140 millimetres |
| Item Type Name | 4 Blockers + Key |
| Item Weight | 0.02 Kilograms |
| Lock Type | Key Lock |
| Manufacturer | LINDY |
| Manufacturer Warranty Description | 2 year warranty. |
| Material | Acrylonitrile Butadiene Styrene |
| Model Name | 40454 |
| Model Number | 40454 |
| Number Of Pieces | 1 |
| Part Number | 40454 |
| Recommended Uses For Product | Prevents unauthorized access to USB ports |
| Shape | Rectangular |
| Smart Home Compatibility | Not Smart Home Compatible |
| Special Features | Key Unlock |
| Style | 4 Blockers + Key |
| Unit Count | 1.0 count |
User
USB LOCKS
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
User
Handy
As my laptop is almost on the road I ve found this product very useful. Extra protection. Good stuff. I am using continuously. Thx
User
Do what they say
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.
User
which renders the extraction tool useless. I also then realised that they can be ...
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.
User
Five Stars
Cheap and cheerful, do the job of blocking USB ports.
User
Five Stars
Easy device to use
User
Good.
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.
User
gut aber teuer
gut aber teuerdas 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 mitentsprechendem Werkzeug leicht umgangen werden kann.
User
Bloquer
Je voulais simplement empêcher que d'autres utilisateurs n'utilise mon ordinateur de travail. Ça marche très bien
User
Excelente
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.
User
Not thoroughly engineered, but good quality.
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.
User
Good, not great.
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.
Trustpilot
1 month ago
3 weeks ago