Synology RX418 4bay Expansion Unit (Diskless)

Synology RX418 4bay Expansion Unit (Diskless) Brand: Synology Port eSATA: 1 x eSATA HDD Interface: 4 x SATA (4 x Bay) Power: AC input power voltage: 100V to 240V AC Power frequency: 50 to 60 Hz, single phase Features: Plug-and-play design for seamless storage space upgrade Online volume expansion 12-inch depth to fit in 2-post racks and wall mount racks Energy-saving deep sleep mode Managed from Synology DiskStation Manager (DSM) Temperature: Operating Temperature: 5 ~ 35 degree Celsius (40 ~ 95 degree Fahrenheit) Storage Temperature: -20 ~ 60 degree Celsius (-5 ~ 140 degree Fahrenheit) Humidity: 5-95% R.H Dimensions: 1.73' x 18.90' x 12.80'