The system has a USB Type-C port (cables included) and supports USB 3. 1, desktopo win 10, macbook pro latest OS X, imac 21' and 27 '. R7000 sees WD My Book Duo only via USB 2. Ready to use right out-of-the-box with pre-formatted NTFS for Windows® OS users. Wd my book duo raid 1 setup I have formatted it for Mac (Mac OS Extended (Journaled)) but have found that it is not recognised by the included software, WD Discovery so I have not been able to set it up using this.