Dimensions (W x D x H) 438 x 200 x 103 mm, 2.4U high. 15 open slot (Slot Dimensions (W x D x H) 27 x 95 x 71 mm). LED: Power 1, Power2, Fan1, Fan2. Fan: 2 x Fan. Power Requirements: DC -48V , 2A, Range: -40V ~ -60V. Power Output: Each slot 5V DC 1A. Power Consumption: 6 watts / 20.46BTU (System only) 96 watts / 327 BTU ( Full loading). Operating Environment: 0~50 degrees C, 5%~90%RH. Storage Environment: -20~70 degrees C, 5%~90%RH. Emission: FCC Class A, CE mark.