The MacBook Pro comes with a built-in SD card reader, so you can insert compatible SD cards and view their contents using the Media Reader. The cards must conform to SD 1.x, 2.x, and 3.x standards.

You can format an SD card using Windows, Mac, and Android devices, and likely your digital camera too.

You can move apps to an SD card from an Android phone's Settings with just a few taps, helping free up your phone's internal storage.

SD cards can be pricey, but they also pack a lot of storage into a small form factor—if you don't get one that refuses to work with PCs. If you do, here's how to fix the issue.