4TB My Passport Mac USB3 Blue Ext HDD The My Passport for Mac drive is trusted, portable storage that perfectly complements your on-the-go lifestyle. Compatible with USB-C and USB-A, the drive also comes in a new, stylish design that fits in the palm of your hand. Perfectly paired with Appleís Time Machine backup software and password protection, the My Passport for Mac drive helps keep your files safe and your life driving forward.