WD 3TB My Cloud Personal Network Attached Storage - NAS - WDBCTL0030HWT-NESN Supported Operating Systems: Windows 8, Windows 7, Windows Vista or Windows XP (SP 3) operating systems Mac OS X Mountain Lion, Lion or Snow Leopard operating systems Interface: Ethernet Port RJ-45: 1 x 10/100/1000M Temperature: Operating: 5°C to 35°C Non-op.: -20°C to 65°C Dimensions: 6.70 x 1.90 x 5.50 Weight: 2.12 lbs. Package Contents: Personal cloud storage Ethernet cable AC adapter Quick Install Guide