Key Features 1. 4U / Tower Storage Chassis 2. 900W Redundant Power Supply 3. 24 x 3.5" SAS/SATA Hot-swappable Drive Bays 4. 7x Full-height, Full-length expansion slot 5. 3x Hot-Swappable Cooling Fans 6. Power Switch, Reset Switch & 6 LED Indicators Tower / 4U chassis support for quad motherboards (up to size 13.68" x 13") Processor Support Dual Xeon Processors Dimensions Height 7" (178mm) Width 17.2" (452mm) Depth 26" (660mm) Gross Weight 75 lbs (34.0kg) Available Colors Black Expansion Slots 7x PCI expansion slots Drive Bays Hot-swap 24x 3.5" Hot-swap (SAS / SATA) Drive Bays Optional 2x Fixed Internal Hard Drive Bays OR 1x Fixed Internal Hard Drive Bay and 1x DVD-ROM Drive or Floppy Drive SAS / SATA Backplane SAS / SATA Hard Drive Backplane with SES2 Front Panel Buttons Power On/Off button System Reset button LEDs Power LED Hard drive activity LED 2x Network activity LEDs System Overheat LED Power Fail LED System Cooling Fans 3x 5000 RPM Hot-Swappable Cooling Fans 2x 5000 RPM Hot-Swappable Rear Exhaust Fan System Monitoring Chassis intrusion switch Operating Environment (System) Operating Temperature Range 10 - 35°C (50° to 95° F) Non-Operating Temperature Range -40 - +70°C (-40° to 158° F) Humidity Range 8 - 90% non-condensing Non-Operating Humidity Range 5 - 95% non-condensing Power Supply (1 + 1) 900W AC to DC power supply w/ PFC AC Voltage 100 - 240V, 60-50Hz, 11-4.5 Amp +5V 50 Amp +5V standby 4 Amp +12V 75 Amp -12V 0.6 Amp +3.3V 30 Amp Regulatory (Power Supply) Power Supply Safety / EMC USA - UL listed, FCC Canada - CUL listed Germany - TUV Certified Europe/CE Mark EN 60950/IEC 60950-Compl