Synology RX1217RP Redundant Power Expansion for RackStation (Diskless)

Synology RX1217RP Redundant Power Expansion for RackStation (Diskless) HDD Interface: 12 x SATA (12 x Bay) Power: Power Supply Unit / Adapter: 2 x 500W AC Input Power Voltage: 100V to 240V AC Power Frequency: 50/60 Hz, Single Phase 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: 3.46' x 16.95' x 27.24' Weight: 29.54 lbs. Package Contents: 1 x Main Unit 1 x Accessory Pack 1 x AC Power Cord 2 x AC Power Cord Expansion Cable: 1 x Infiniband 1 x Quick Installation Guide