Synology RXD1215sas Diskless System RackStation 12-Bay Rackmount Expansion Unit Port USB: 2 x USB3.0 Form Factor: Rackmount Processor: Intel Xeon E3-1230 v2 Quad Core 3.3 GHz Default/ Max. Memory: 4 GB X 2 DDR3 ECC Power: 100-240 VAC 50/60Hz Temperature: 5°C - 35 °C Humidity: 5-95% R.H Dimensions: 1.73 x 16.93 x 18.90 (H x W x D)