WD WDBZVM0040JWT-NESN 4TB 2-Bay My Cloud Mirror Personal Cloud Storage Form Factor: 2-Bay Port RJ-45: 1 x 10/100/1000M Port USB: 2 x USB3.0 Processor: 1.2 GHz Default/ Max. Memory: 512MB Power: AC input voltage (AC adapter): 100-240 Vac AC input frequency: 50-60 Hz DC output: 12Vdc, 3A Temperature: 5°C - 35 °C Dimensions: 6.75 x 6.10 x 3.90 (H x L x W)