Channels 128 , Drives/bays 16 , Rack 3U , SATA , 1x15pin D-sub , 2xHDMI , 1xRS232 , 2xUSB 2.0 , 2xUSB 3.0 , 1xeSATA , 4xRJ45 , 1xRS-485 , 1xMiniSAS, ext , 16xAlarm In , 8xAlarm Out , Power supply requirements AC100V ~ 240V, 50 ~ 60 Hz , Power consumption 51 Watts , Dim. 485 x 512.9 x 133.2mm , Temp. range -10°C ~ +55°C