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You can use USB, Thunderbolt, or FireWire to connect a drive to your Mac, although you may need to use an adapter if your Mac doesn’t have the right ports. Time Machine creates a backup of your Mac on an external drive.

Get an External Drive to Use With Time Machine If you replace your Mac, change the storage drive, or wipe it clean, it’s easy to restore a Time Machine backup and recover every piece of data you lost. You can also use Time Machine to recover long-lost files, undo new changes to a document, or travel back to a time before malware infected your Mac.Ī Time Machine backup includes absolutely everything on your Mac: photos, documents, user preferences, and third-party apps. This means you can revert your entire Mac-or an individual file on your Mac-to the state it was in on a certain date.