WD 12TB My Cloud Mirror (Gen 2) + 2-bay Personal Cloud Storage - NAS Network Attached Storage WDBWVZ0120JWT-NESN Supported Operating Systems: Windows 10, Windows 8, Windows 7, or Windows Vista operating systems Mac OS X Yosemite, Mavericks, Mountain Lion or Lion operating systems Interface: Gigabit Ethernet 2 x USB 3.0 expansion ports Port RJ-45: 1 x 10/100/1000M Port USB: 2 x USB3.0 Temperature: Operating: 5°C to 35°C Non-op.: -20°C to 65°C Dimensions: 6.75 x 3.90 x 6.10 Weight: 5.00 lbs. Package Contents: Personal cloud storage Ethernet cable AC adapter Quick Install Guide