It comes with WD SmartWare preinstalled so you can use that for backups. The drive can be used for regular OS backups as well as for backups with third-party programs. 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. With WD Discovery software, you can also work across both Mac and PC. The drive cannot be read outside of the enclosure due to the encryption as well as due to the soldered USB port on the drive PCB so I wouldn't remove it from the enclosure (plus this voids the warranty. My Passport Ultra for Mac is formatted for Time Machine and ready to deliver plug-and-play storage out of the box. This offers great security to the drive and won't take time to encrypt it of you decide to The drive features Hardware Encryption which encrypts every piece of data on the drive, regardless if you have set a password on it or not and cannot be turned off. The drive can be formatted, partitioned and so on from the disk management freely.Ī couple of notes from me specifically on the WD My Passport Ultra: As Anusha explained pretty well, you are free to use external drives such as the WD My Passport Ultra the same way you would use an internal drive in an external enclosure.