What are some functional differences between the Windows and the Mac versions of Transcend Elite? Category : Software / Firmware / Applications Note: 1. To have the external hard disk support both Windows and Mac operating systems, we recommend formatting the hard disk into FAT32 or exFAT format. 2. The disk lock/unlock function for MacOS version is still under evaluation. Is the answer helpful? Related How to format the flash drive to NTFS in Windows XP? Is the StoreJet 25MC compatible with USB Type-C smartphones and tablets? Why can't I use my external device (USB Type-C) on mobile phones or tablets? Technical Support If the answer can't help you, you can contact the Tech Support Department Get Started