Dell brought its new ruggedized laptop, the Latitude E6400 XFR, into our offices for a demo, and Senior Writer Darren Gladstone put it through a series of grueling tests. Watch as he grinds dirt into the keyboard and washes it off with a nozzle--before he drops it on the floor. And the laptop still runs! Available now for $4,299, this may be the laptop for you if you need a machince that meets military standards.

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