If the Dell QuickSet feature is installed on the laptop, press the "F3" and "Fn" keys together to see the battery meter. Save your work if the Latitude gives you a low battery warning message ...

Dell broke the pattern of Intel-powered laptops providing only one USB 3.0 port. The Latitude 330 boasts two, plus one USB 2.0 port that can charge a device whether the computer is awake or asleep.