
If you’ve had a laptop over the last two decades, it’s likely you’ve encountered one. However, it can be easy to overlook, particularly since it doesn’t appear to serve a purpose at first sight. The item we’re referring to is that small slot found on the side of numerous laptops — you know, the one situated close to your USB and charging ports, distinguished by a lock icon beside it. Well, what if we informed you that it actually has a practical use?
This slot — which has been available on numerous laptop models for the last 20 years — is designed for a specific type of lock known as a Kensington lock. These security devices allow you to secure your electronics directly to furniture like tables, desks, or any immovable item. Have you ever visited Best Buy, Walmart, or similar retailers featuring laptops and electronics and noticed some of them attached to a cable? That’s a Kensington lock, and there’s a good chance your laptop is compatible with one as well.
Which devices can use Kensington locks?
A variety of devices have been created with Kensington locks in consideration. Some of the top laptops feature them (although ultrabooks or ultra-slim laptops tend not to), along with desktops, monitors, projectors, and many other high-value electronic devices that may need to be secured somehow. You can determine if your laptop is equipped with a Kensington lock slot by inspecting the side or back for the connector slot. If it has one, you can search for a compatible lock by checking your laptop model.
Kensington Security Slots (often referred to as “K Slots”) have been in existence for over 30 years. Throughout this duration, the locks have evolved to accommodate an array of devices, including those already mentioned, as well as printers, speakerphones, and more. The company behind them, Kensington Computer Products, asserts that 95% of laptops, projectors, printers, and monitors are compatible with its locking systems — at least as of 2022.
The number of supported devices has shifted slightly as ultrabooks and ultra-thin laptops have become increasingly prevalent, but standard-sized laptops usually still include a Kensington Security Slot. If you’re considering purchasing an affordable laptop from Walmart or other retailers, it’s worth checking whether it includes the provision for a Kensington lock.

