Equipped with USB-C technology, the My Passport Ultra for Mac portable drive offers an easy way to expand your storage with a modern metal design that complements your Mac. It's formatted for macOS out of the box to seamlessly deliver plug-and-play storage with Time Machine compatibility, while password protection with hardware encryption helps enforce the security of your content. And with up to 4TB of storage and a 3-year limited warranty, you get premium storage to rely on for years to come. Featuring USB-C technology, the My Passport Ultra for Mac portable drive delivers quick and easy storage for your Mac, while the included USB 3.0 adapter makes sure it's compatible with older machines. Fusing modern anodized metal and textures, the My Passport Ultra for Mac portable drive matches your personal style and the latest Mac computers. WD Security function within WD Discovery helps keep your files private with a password of your choosing, making it easy to enable password protection and 256-bit AES Hardware Encryption. My Passport Ultra for Mac is formatted for Time Machine and ready to deliver plug-and-play storage out of the box. With WD Discovery software, you can also work across both Mac and PC. We provide a downloadable HFS+ driver for Windows 10, 8.1 or 7 to enable you to read and write to your My Passport Ultra for Mac drive without reformatting. The My Passport Ultra for Mac drive is built using tried and true components for lasting endurance and comes with a 3-year limited warranty to deliver premium storage you can rely on.