Skip to Content Skip to footer
Welcome to the Kensington site. We've directed you here based on your current location.
  • No Suggestions

Laptop Locks, Security Slots and More: Kensington Physical Security

From the invention of the first computer cable lock, to biometrics and electronic locking, Kensington will keep your devices and information right where they belong.

Browse Kensington's Security Solutions & Products

Cable lock attached to Surface Pro

Why Kensington for Physical Device Security

To us, security is about more than saving your physical device from theft — it’s also about saving data from falling into the wrong hands, which could be far more costly than simply replacing the device. That’s why our innovative security solutions are tough, easy to use, and compatible with 90% of business devices. Below is a breakdown of what sets our locks apart from the rest, providing you with the industry-leading solutions you’ve come to expect from the pioneer in physical device protection.

  • Carbon Steel Protection
  • Comprehensive Security Solutions
  • Kensington Common Keying System
Carbon Steel Protection Chevron Icon

Carbon Steel Protection

We use materials that set the standard in preventing cutting attempts, with the flexibility to anchor our cable locks to a desk, table, or other attachment point. All while safeguarding anchor points from scuffs or damage, thanks to our protective overmolding.

  • Standard cable diameter: 4.4~5.0mm 7x7 or 7x19 construction
  • Desktop peripherals kit cable diameter: 6.5mm 7x7 construction
  • Ultra cable diameter: 8mm 6x7x3x7 construction
  • Coiled cable diameter: 3.5mm 7x7 construction

Steel cables

Comprehensive Security Solutions Chevron Icon

Comprehensive Security Solutions

As the pioneer of physical device protection, we have never stopped innovating. Today, we offer custom and standard solutions to provide businesses and consumers options that are as easy to deploy as they are to secure valuable assets.

  • Custom Keyed (Master Keyed, Supervisor Keyed, Like Keyed, Keyed Different)
  • Proprietary Algorithms prevent cross duplication of keys
  • Combination locks offer 10,000 possible combinations

Cybersecurity icon

Kensington Common Keying System Chevron Icon

Kensington Common Keying System

Kensington’s 5mm Common Keying System enables businesses to leverage a single tubular keying solution for securely managing all of their Kensington locks. The keying system is so small, it makes it even harder for people trying to pick it. But for those who try, our patented Hidden Pin™ technology is designed to defend against common picking techniques, thwarting attempts to pick the lock.

  • 5mm Kensington Common Keying System
  • Patented Hidden Pin Technology (7 pins plus one “hidden” pin)
  • Tubular keying
  • 90-degree key rotation to unlock

Kensington keyed cable lock

Decades of Security Slot and Lock Leadership

Ever since we invented the laptop lock more than 30 years ago, more people trust Kensington to secure their electronics than any other brand. In fact, we’ve sold enough locks and cables to circle the globe twice. To us, security is about more than saving your physical device from theft — it’s also about saving data from falling into the wrong hands, which could be far more costly than simply replacing the device. That’s why our security solutions are tough, innovative, and easy to use.

History of Locking with Kensington Diagram


Traditional Locks

  • Keyed Locks
  • Combination Locks
  • Desktop Locks
  • Portable Locks
  • Lock and Anchor Points

Find a Solution

Next-Generation Hardware Security

  • Thin & Light Laptop Locks
  • Surface Locks
  • Biometric Security
  • Portable Locks
  • USB Port Locks

Find a Solution

Industry Solutions

  • Device Charge & Sync Cabinets
  • Tablet/POS Stands & Enclosures
  • WindFall™ Stands and Frames for Tablets

Find a Solution

Custom Keyed Solutions

Custom solutions include Master Keyed, Supervisor Keyed, and Liked Keyed options.

Master Keyed system diagram

Supervisor Keyed system diagram

Liked Keyed system diagram

Combination Lock Solutions

Standard solutions include Keyed Different locks; as well as Serialized, and Resettable combination locks.

Resettable lock icon

Resettable combination locks offer up to 10,000 possible combination codes that can be selected by the user, making the codes more personalized and easily remembered.

Preset lock icon

Serialized combination locks, a convenient solution for large lock deployments, are supplied with a serial number etched on the lock head (similar to serialized keyed locks), along with a preset combination code printed on a sticker that is included in the packaging.


Security that can’t be beaten.

With a combination of precision engineering, quality materials — including aircraft-grade carbon steel — and device compatibility, Kensington is proud to be a market leader in security solutions.


Strength in Testing

At Kensington we believe in pushing our products to the limits, to ensure they not only meet industry standards, but that they exceed our own expectations. Below are some of the tests we perform to ensure you receive the very best security products.

A Kensington lock withstanding heat and water damage


  • Extreme heat and cold
  • Salt spray (for age resistance against rust)

A Kensington lock withstanding impact from a hammer


  • Drop
  • Structural vibration
  • Impact

A Kensington lock withstanding moisture and humidity


  • Drop/impact
  • Vibration
  • Humidity

A Kensington lock holding up a heavy parking block


  • Pull
  • Tension
  • Shear/cut
  • Lock picking
  • Bumping
  • Incorrect key protection

A Kensington lock and various screws around it

Endurance and Stress

  • Cable and lock tip rotation
  • Repetitive lock attachment/detachment
  • Key torque strength
  • Cylinder lock strength
  • Button compression
  • Combination torque
  • Plunger/screw torque

A pair of wire cutters and an intact Kensington lock


  • Fit/function (down to the component level)
  • Detailed finished goods inspections
  • ISO 9001 facilities
  • Six Sigma methodology
  • Engineered and designed in San Mateo, California
  • TAA compliant
  • Five-year no-hassle warranty

Register & Retrieve logo

Register & Retrieve™

Kensington’s complimentary online key and combination registration program that allows for quick, secure, and easy replacement if a key is ever lost or stolen; and easy combination retrieval if a code is ever forgotten or misplaced.

Get Access


Our commitment to SAFE — Secure Accessible Foundational Excellence

The culmination of our craft has led to the development of Premium SAFE security solutions. Products with this designation have been independently verified to exceed market standards, placing these products in a league of their own. When you desire the best, Premium SAFE is the answer.



  • How do laptop locks work?
  • What is a security slot on a laptop?
  • Are laptop cable locks universal?
  • How do you open a laptop lock?
  • Do laptop locks really work?
How do laptop locks work? Chevron Icon

The two most used locking options are our traditional keyed locks and combination locks, which are compatible with more than 90% of laptops, desktops, projectors, monitors, and printers from all major manufacturers.

For light and thin laptops and tablets that are too slim for a standard lock slot, Kensington has designed a range of locks built to our tough standards that fit perfectly to secure these ultralight and mobile devices.

What is a security slot on a laptop? Chevron Icon

The Kensington Slot is the standard slot that can be paired with a standard security cable lock. Also known as the K-Slot, this device locking option can be used on most brands of laptops, desktops, monitors, and other devices.

Are laptop cable locks universal? Chevron Icon

Not all laptop locks are universal. However, our ClickSafe Combination Laptop Lock fits standard T-bar, nano, or wedge-shaped laptop security slots, regardless of brand or generation.

How do you open a laptop lock? Chevron Icon

There are different types of laptops locks depending of the security slot type (Nano, Standard or Wedge-shaped) and lock type (Combination or keyed). Older technology like T-bar or standard locks required the user to align the lock slot with the T shaped cleat on the locking head and the turn the key to lock or unlock. As devices get thinner and lighter locks have evolved, with the introduction of nano and wedge-shaped slots the new locking mechanisms opens the locking cleats inside the slot to lock and close them to unlock. With keyed solutions users must have the correct key to actuate the locks and with combination locks the user must first set the correct combination on the dials before pushing a lever to engage or disengage.

Do laptop locks really work? Chevron Icon

Laptop locks are the first line of defense against device theft. They engage on the lock slot with one purpose, to lock the device from an anchor point designed to withstand pulling, tension, cut, humidity and more. Kensington locks use materials that set the standard in preventing cutting attempts, with the flexibility to anchor our cable locks to a desk, table, or other attachment point and with strong keyed or combination lock heads to satisfy every user needs.

Live chat by BoldChat