WD 8TB My Cloud EX4100 Expert Series Network Attached Storage - NAS WDBWZE0080KBK-NESN Processor: Marvell ARMADA 388 dual-core 1.6 GHz Default/ Max. Memory: 2 GB DDR3 Operating System: Windows 8/8.1, Windows 7 or Windows Vista operating systems Mac OS X Yosemite, Mavericks, Mountain Lion or Lion operating systems DLNA/UPnP devices for streaming Router with Internet connection Interface: USB 3.0 x 3 (one in front, two on the back) Gigabit Ethernet Power: AC input voltage (AC adapter): 100–240 VAC AC input frequency: 50–60 Hz Output: 19 V/ 4.74 A Temperature: Operating Temperature: 5 degree C to 35 degree C (41 degree F to 95 degree F) Non-op Temperature: -20 degree C to 65 degree C (-4 degree F to 149 degree F) Humidity: Operating relative humidity: 8% to 90% Non-operating relative humidity: 5% to 95% Package Contents: NAS Ethernet Cable Power supply and cable Quick install guide...