If you run into any issues with your new MagSafe Battery Pack, you may need to provide Apple Support with its serial number. There are a couple of quick and easy ways to find that. We’ll show you how.

Although most of your paper money won’t be worth more than what it says, there’s a chance it might — even if it’s not decades old — based on the serial number. To find the value, or find out if your ...

Most electronics come with a bevy of numbers etched into their frames, stamped on their undersides, and emblazoned onto their boxes. But why? Well, the short answer is that they're needed for model ...