Key Features 1. 300W High-efficiency Power Supply 2. 2x 5.25" external drive bays, 4x 3.5" internal drive bays, 1x 3.5" external drive bay (OEM) 3. Rear 9cm PWM Cooling Fan with tool-less design 4. 1x 8cm Front Intake Fan (optional) 5. 4x I/O expansion slots 6. 2x USB ports (2.0 ready) 7. Power switch & 3 LED indicators 8. Quick installation: tool-less side panels, Drive Bays, HDD Cage turns 90°, and Stamped Motherboard Support (no standoffs required) 9. Kensington Lock Security Product SKUs CSE-731i-300B SuperChassis 731i-300B (Black) Form Factor Mini-Tower & chassis support for max. motherboard size - 9.6" x 9.6" micro-ATX Processor Support Supports single Intel® / AMD processor Dimensions Width 7.25" (184 mm) Height 14.25" (362 mm) Depth 16.75" (425 mm) Weight 16 lbs (7.26 kg); Gross Weight: 20 lbs Packaging 11" (W) x 20" (H) x 21" (D) 280mm (W) x 508mm (H) x 533mm (D) Available Colors Black Expansion Slots Supports 4x full-height, full-length I/O expansion slots Drive Bays Internal 4x 3.5" tool-less HDD trays SAS or enterprise SATA HDD only recommended External 2x 5.25" external drive bays 1x 3.5" external drive bay (OEM option) Front Panel Buttons Power On/Off button LEDs Power LED Hard drive activity LED Network activity LED System Overheat LED Ports 2x Front side USB ports (USB 2.0 ready) Servers ( for SC731i-300B) 5038D-I System Cooling Fans 1x 9cm (rear) PWM fan w/ tool-less design 1x 8cm (front) cooling fan (optional) 25dB Optimized Cooling Technology at 25dB Whisper-Quiet Operation Operating Environment (System) Operating Temperature Range 5°C ~ 35°C (41°F ~ 95°F) Non-Operating Temperature Range -40°C ~ 60°C (-40°F ~ 140°F) Operating Relative Humidity Range 8% ~ 90% (non-condensing) Non-Operating Relative Humidity Range 5% - 95% (non-condensing) Power Supply 300W AC power supply w/ PFC AC Voltage 100 - 240V, 50-60Hz, 5 Amp DC Output 5V + 12V + 3.3V - 12V < 290W +5V 19 Amp +5V standby 2.0 Amp +12V 11 Amp + 11.5 Amp -12V 0.15 Amp +3.3V 16.0 Amp Certification Bronze Level Certified Bronze Certified [ Test Report ] Regulatory (Power Supply) Power Supply Safety / EMC USA - UL listed, FCC Canada - CUL listed Germany - TUV Certified Europe/CE Mark EN 60950/IEC 60950-Compliant CCC, BSMI Standard Parts List Part Number Qty Description Chassis CSE-731I-300B 1 SC731I-300 Mini Tower Chassis (black) Cable(s) CBL-0087 CBL-0084L 1 1 Front Control Panel Cable, 16 pin to 16 pin Front Control Panel Cable, 16-pin split convertor, 6" Fan(s) FAN-0108L4 1 92x25mm 4-pin PWM Rear Cooling Fan for SC731 Drive Trays MCP-220-73101-0B 4 SC731 HDD Tray Power Supply PWS-305-PQ 1 300W ATX Power Supply