Anonymous5 years ago000Can I also use this hard drive for my Surface Book? What does "Windows OS" compatible mean?Show in original language (German)inematov5 years ago000 Helpful answerThe StoreJet for Mac 100/300/500 is pre-formatted for use with Mac OS. To use it with Windows, the StoreJet hard disk must first be formatted to NTFS.Show in original language (German)Comment2 comments