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Product Line: Fortinet 3900E Series
Product Type: AV Firewalls
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Product Description

The FG-3960E Fortinet is designed for rack mounting with a form factor of 5 RU, measuring 222 mm x 437 mm x 695 mm (8.8" x 17.2" x 27.3") and weighing 45.8 kg (100.8 lbs). It supports AC power supply ranging from 100–240V AC, 50–60 Hz, with a maximum power consumption of 2110 W and features 6 hardware-accelerated 40/100 GE QSFP+/QSFP28 slots and 16 hardware-accelerated 1/10 GE SFP/SFP+ slots. The device operates efficiently within a temperature range of 0°C (32°F) to 40°C (104°F), supports redundant 2+1 hot-swappable power supplies, and is designed for optimal performance with a noise level of 63 dBA and forced airflow from front to back.

FAQs for the FG-3960E

  • What are the dimensions of the rack mount hardware in inches and millimeters?
    Answer: The dimensions are 8.8 inches (H) x 17.2 inches (W) x 27.3 inches (L) or 222 mm (H) x 437 mm (W) x 695 mm (L).
  • How much does the hardware weigh?
    Answer: The hardware weighs 100.8 lbs (45.8 kg).
  • What AC power supply specifications does the hardware support?
    Answer: The AC power supply supports 100–240V AC, 50–60 Hz.
  • What is the average and maximum power consumption of the device?
    Answer: The average power consumption is 960 W, with a maximum of 2110 W.
  • Can you detail the device's heat dissipation capabilities?
    Answer: The device has a heat dissipation capability of 7200 BTU/h.
  • What are the power input range and maximum DC current for the FG-3980E-DC and FG-3960E-DC models?
    Answer: The DC power input range is -40V to -72V DC with a maximum DC current of 30A per feed (2+1).
  • Does the device feature redundant power supplies?
    Answer: Yes, it features 2+1 redundant hot-swappable power supplies.
  • What operating temperatures is the hardware designed to withstand?
    Answer: It can operate between 32°F (0°C) and 104°F (40°C).
  • How many hardware-accelerated 40/100 GE QSFP+/QSFP28 and 1/10 GE SFP/SFP+ slots does it have?
    Answer: It has 6 hardware-accelerated 40/100 GE QSFP+/QSFP28 slots and 16 1/10 GE SFP/SFP+ slots.
  • What are the noise level and forced airflow direction specifications?
    Answer: The noise level is 63 dBA with a forced airflow direction from front to back.

Product Review

The Fortinet FG-3960E is equipped with high-capacity hardware-accelerated ports, including six 40/100 GE QSFP+/QSFP28 and sixteen 1/10 GE SFP/SFP+ slots, catering to demanding network environments. However, its substantial power consumption, peaking at 2110W with a heat dissipation of 7200 BTU/h, may raise concerns for energy efficiency and cooling requirements in densely packed data centers. Additionally, the unit's considerable size (8.8" x 17.2" x 27.3") and weight (100.8 lbs) necessitate ample rack space and robust physical infrastructure, but its support for redundant power supplies enhances system reliability.


The Fortinet FG-3960E is designed to meet the demands of high-performance network environments, offering a comprehensive suite of hardware specifications that ensure optimal functionality and reliability. This product is housed in a rack-mount form factor with dimensions of 8.8 inches in height, 17.2 inches in width, and 27.3 inches in length, translating to 222 x 437 x 695 mm, making it suitable for standardized data center installations. Weighing 100.8 lbs (45.8 kg) and occupying 5 rack units (RU), it is engineered for stability and durability in various operational conditions. Powering the FG-3960E is an AC power supply that operates on 100–240V AC at 50–60 Hz, with an average power consumption of 960W and a maximum consumption of 2110W. The device supports a maximum AC current of 12A at 100V and 10A at 240V. For environments requiring DC power, the FG-3960E supports a DC input range of -40V to -72V DC with a maximum current of 30A per feed, featuring a 2+1 redundancy. The power supply units are hot-swappable and 80Plus compliant, ensuring efficient power usage and reliability. The system's heat dissipation capability stands at 7200 BTU/h, reflecting its robust performance under heavy workloads. Environmental adaptability is a key aspect of the FG-3960E, operating effectively between temperatures of 32°F (0°C) and 104°F (40°C), and can be stored in temperatures ranging from -31°F (-35°C) to 158°F (70°C). It maintains functionality in humidity levels from 10% to 90% non-condensing, and operates comfortably up to an altitude of 7400 ft (2250 m). Despite its powerful performance, the noise level remains at 63 dBA, a consideration for environments where noise is a concern. Key hardware features include: - Hardware Accelerated 40/100 GE QSFP+/QSFP28 Slots: 6 - Hardware Accelerated 1/10 GE SFP/SFP+ Slots: 16 - Redundant Power Supplies (Hot Swappable): Yes, with a 2+1 redundancy configuration These specifications underline the FG-3960E's capability to handle high-density connections and the flexibility to adapt to a variety of network configurations, supporting both 40/100 Gigabit Ethernet and 1/10 Gigabit Ethernet interfaces. The inclusion of hot-swappable, redundant power supplies ensures uninterrupted operation and minimizes downtime, essential for critical network infrastructure. The airflow system is designed for front to back operation, promoting efficient cooling and stability under extended operational periods. This design aids in maintaining optimal performance by ensuring that the hardware components within the unit are kept at a regulated temperature. In summary, the Fortinet FG-3960E combines high-capacity networking capabilities with reliable, efficient power management and environmental resilience, making it a suitable choice for demanding network environments. Its design considerations, from power efficiency to cooling and noise management, reflect an understanding of the needs of modern data centers and high-performance network setups.


Item Description
Model Fortinet FG-3960E
Dimensions (HxWxL) 8.8 x 17.2 x 27.3 inches (222 x 437 x 695 mm)
Weight 100.8 pounds (45.8 kilograms)
Installation Type 5 RU Rack Mountable
Electricity Supply (AC) 100–240V AC, 50–60 Hz
Average Power Use 960 Watts
Peak Power Use 2110 Watts
Maximum AC Current 12A at 100V, 10A at 240V
Heat Output 7200 BTU/hour
DC Power Range (for FG-3980E-DC, FG-3960E-DC) -40V to -72V DC
Maximum DC Current 30A per power feed (2+1 configuration)
Backup Power Supplies Yes, 2+1 Hot Swappable
Power Supply Efficiency 80 Plus Certified
Operating Temperature Range 32°F to 104°F (0°C to 40°C)
Storage Temperature Range -31°F to 158°F (-35°C to 70°C)
Humidity Tolerance 10% to 90% (non-condensing)
Ambient Noise 63 dBA
Cooling System Front to Back Airflow
Maximum Operational Altitude Up to 7400 feet (2250 meters)
Slots for 40/100 GE QSFP+/QSFP28 6, with hardware acceleration
Slots for 1/10 GE SFP/SFP+ 16, with hardware acceleration

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