Processor Support Supports dual, single Intel / AMD processors Expansion Slots 4x Full-height Full-length I/O and 3x Low-Profile Expansion Slots (Standard add-on cards) Drive Bays Hotswap: 8x 3.5" SAS / SATA Hot-swap drive bays SAS or enterprise SATA HDD only recommended SAS Backplane 1x 2U SAS backplane w/ Enclosure Management Peripheral Drives DVD-ROM: Slim DVD-ROM drive (Optional) Front Panel Buttons: Power On/Off button System Reset button LEDs: Power Status LED Hard drive activity LED 2x Network activity LEDs System Overheat LED Power Fail LED Ports: 2x USB Ports + DB9 COM Port (optional) System Cooling Fans: 3x 80x38mm 4-pin PWM Fans System Monitoring Chassis Intrusion Switch Operating Environmental (System): Operating Temperature Range: 10C to 35C (50F to 95F) Non-operating Temperature Range: -40C to 70C (-40F to 158F) Operating Relative Humidity: 8% to 90% (non-condensing) Non-operating Relative Humidity: 5% to 95% (non-condensing) Power Supply 740W (1+1) Redundant high-efficiency power supply with PMBus AC Input: 100-240 V, 50-60 Hz, 9-3.5 Amp DC Output: 4 Amp at +5V Standby 61.7 AMP at +12V With Power Distributor: +5V: 30 Amp +3.3V: 24 Amp -12V: 0.6 Amp Certification: 80 PLUS Platinum Regulatory (Power Supply) Power Supply Safety / EMC: USA - UL listed Canada - CUL listed Germany - TUV Certified EN 60950/IEC 60950-Compliant CB Report CCC Certification Color Black Form Factor 2U chassis supports Supermicro Proprietary WIO motherboards: 12" x 13", 13.68" x 16.5" E-ATX Item Dimension (L"xW"xH") 25.5 x 17.2 x 3.5