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The HP DEFCON 1 Ultra Laptop Security Alarm (CQ400U) has been discontinued and may no longer be available for sale online or in store.
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HP DEFCON 1 Ultra Laptop Security Alarm

Model Number
Limited 1-Year Warranty
Works With
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With the HP DEFCON 1 Ultra laptop Security Alarm on guard, you can relax in airports, restaurants, and other public places. It's the only system that combines stainless steel cable with motion sensor technology and a 95dB Alarm to create a combination locking system that easily attaches to your laptop or carrying case in any setting.

The HP DEFCON 1 Ultra also features a four-digit resettable combination dial versus the three-digit dial in the original DEFCON 1. The addition of the fourth dial in the HP DEFCON 1 Ultra increases its security protection by increasing the thief’s total combination search time to be 10.5 times more difficult.

Another new feature to HP DEFCON 1 Ultra is the combination dial reset button. It’s an easy to find and simple to use resettable button on the upper right side of the unit. So now security can be simple!


Easily attaches to your carrying case, luggage, or any laptop with a security lock slot

Easy to use re-settable combination lock controls electronic alarm, access to battery door and motion sensor

Flashing LED Indicates Alarm Status

Lightweight, compact design

Long battery life, three AAA batteries lasts approximately 3 months

New Locking design on the Security Lock Adapter

Resettable 4-digit combination lock- up to one of 10,000 unique combinations available

Simple to Use, Difficult For Thieves to Disarm

Siren is activated when cable is severed and when motion sensor is armed and triggered

Thicker retractable steel cable automatically retracts into plastic housing at the press of a button

Lock Slot

Lock attaches to your laptop using the rectangular Lock Slot (standard on all laptops); impeding theft and acting as a great deterrent.


Kevlar reinforced cable offers greater resistance to the more determined thief.

Security Lock

Security mechanism is locked and unlocked using a preset combination.

Limited 1-Year Warranty
Continuous use (lock connected, alarm "off") Alkaline battery = 5 months
.09in (2.4 mm) diameter; 3 feet (0.9 meter) long
4.81 x 2.2 x 1.25 inches or 122 x 56 x 32 mm
Controls lock, electronic alarm, access to battery door and motion sensor. Re-settable to one of 10,000 unique combinations.
High and low sensitivity modes. Triggered when device is moved. If motion continues for 4 seconds, alarm will sound for 40 seconds, device then resets to ÔÇťarmed" status.
Loud, 95db alarm siren arms when lock is engaged. Alarm activated when cable is severed and when motion sensor is armed and triggered. Alarm is deactivated when combination lock is released.
5.9 ounces / 170 grams (with batteries installed)
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