About Us Products Solutions Support News Where To Buy
About Us Company Milestones Investor Relations Careers Contact Policies Sitemap
SuperServer® SuperBlade® MicroBlade Motherboards Chassis Accessories AMD Solutions
Virtualization® Cloud® Software Defined Storage Big Data Virtual Desktop and Gaming
Support Downloads Online Support Onsite Services Manual QRG RMA Warranty
Newsroom Events & Conferences News View Video Press Releases
Asia / Middle East Pan Europe North America Central America South America Other Regions GSA

SuperChassis 731i-300B

Super Micro Computer, Inc.
Contact Us



Key Features
    1. 90° Rotatable HDD Cage
    2. Whisper-Quiet (<25dB)
    3. Kensington Lock Support
    4. Front I/O Supports 2x USB 2.0
    5. 1x Optional Front Intake 8cm (2800 RPM) PWM Fan
    6. Mini-Tower Chassis Supports Micro-ATX Motherboard, Size 9.6” x 9.6”
    7. 300W Bronze Level Certified High-Efficiency Power Supply
    8. 1x Rear 9cm (2050 RPM) PWM Fan
    9. 2x 5.25" External HDD Drive Bays & 4x 3.5" Internal HDD Drive Bays


Product SKUs
  • SuperChassis 731i-300B
Form Factor
  • Mini-Tower Chassis - supports for maximum motherboard sizes of 9.6" x 9.6"
    Processor Support
  • Dual Intel® and AMD processors
    • 14.25" (362 mm)
    • 7.25" (184 mm)
    • 16.75" (425 mm)
    Net Weight
    • 16 lbs (7.26 kg)
    Gross Weight
    • 20 lbs (9.07 kg)
    Packaging (W x H x L)
    • 11" (279 mm) x 20" (508 mm) x 21" (533 mm)
    Available Color
    • Black
    Expansion Slots
    • 4 full-height & full-length expansion slot(s)
    Drive Bays
    • 2 x 5.25" drive bay
    • 4 x 3.5" fixed drive bay
    Front Panel
    • Power On/Off button
    • 1 Network Activity LEDs
    • HDD activity LED
    • Power LED
    • System Overheat LED
    • 2x USB 2.0 Port(s)
    Motherboard (for CSE- 731i-300B)
    X10SLQ X10SL7-F
    X10SLM+-LN4F X10SLM+-F
    X10SLH-F X10SLM-F
    X10SLL-F X10SLL-S
    X10SLL-SF X10SLL+-F
    A1SAM-2550F A1SRM-2558F
    A1SAM-2750F X11SSH-F
    X11SSH-LN4F X11SSQ
    X11SSZ-QF X11SSV-Q
    X11SAE-M C7Z170-M
    C7H170-M X11SSQ-L
    C7C232-CB-ML X11SSV-LVDS
    X11SSH-LN4F X11SSL-F
    X11SSL-CF X11SSL-nF
    X11SSL X11SSM-F
    Servers (for CSE- 731i-300B)
    5038D-I 5039D-i
    Systems Cooling
    • 1 x 9cm (2050 RPM) rear exhaust fan(s)
    • Optional 1 x 8cm (front) cooling fan
    Operating Environment (System)
    Operating Temperature Range
    • 5°C - 35°C (41°F - 95°F)
    Non-Operating Temperature Range
    • -40°C - 70°C (-40°F - 158°F)
    Operating Relative Humidity Range
    • 8% - 90% (non-condensing)
    Non-Operating Relative Humidity Range
    • 5% - 95% (non-condensing)
    Power Supply
    PS2 300W Multi-output power supply, 24pin output, Bronze level
    Power Efficiency
    • 87%
    Total Output Power and Input
    • 300W with Input 100 - 240Vac
    AC Input Frequency
    • 50-60Hz
    Dimensions (L x W x H)
    • 140 x 150 x 86 mm
    Output Type
    • 24pin ATX
    • Max: 0.3A / Min: 0A
    • Max: 16A / Min: 0.2A (100Vac - 240Vac)
    • Max: 18A / Min: 0.2A (100Vac - 240Vac)
    • Max: 13A / Min: 0.1A
    • Max: 12A / Min: 0.1A
    • Max: 2A / Min: 0A
    Regulatory (Power Supply)
    Power Supply Safety / EMC
    • BSMI
    • CCC
    • CE/EMC
    • FCC class B
    • TUV/CB
    • UL/CUL
    Standard Parts List
      Part Number Qty Description
    Cable(S)CBL-0260L1US power cord 18AWG 6ft, PBF (default for low watt)
    Fan(s)FAN-0108L4192X25MM 4-PIN PWM REAR EXT FAN FOR SC731
    Drive Tray(s)MCP-220-73101-0B4SC731 Tool-less Internal 3.5inch HDD Tray
    Part(s)MCP-110-00033-0N 2Binding Head Screw (with teeth) #632*4.5L
    Power Supply & AccessoryPWS-305-PQ1300W ATX Power Supply

    Optional Parts List
      Part Number Qty Description
    Fan Kit FAN-0113L4 - 80X25MM 2.8K RPM 4-PIN PWM Fan For SC731
    Peripheral Drive(s) DVM-SONY-DVDRW24-HBT - Black SONY 5.25" 24X DVD-RW, SATA Drive
    Peripheral Drive(s) DVM-LITE-DVDRW24-HBT - Black LITE-ON 5.25" 24X DVD-RW SATA Drive
    Peripheral Drive(s) DVM-LITE-DVDRW22-HB - Black LITE-ON 5.25" 22X DVD-RW IDE Drive
    Peripheral Drive(s) DVM-LITE-DVD18-HBT - Black LITE-ON 18X DVD-ROM SATA Drive
    Information in this document is subject to change without notice.
    Other products and companies referred to herein are trademarks or registered trademarks of their respective companies or mark holders.