My Passport - format for Mac?

I didn’t know there’s a My Passport for Mac.  Didn’t see that option at Best Buy when I got it…it doesn’t say “for Mac” so I’m assuming it’s formatted for Windows. How easy is it to format for Mac or should I just take it back? It’s 1TB.  Thanks!

Go to disk utility and Partition the drive. 

For a more info please go to this link :

How to Format