Fortinet FortiGate 91G

Introducing the Fortinet FortiGate 91G (FG-91G)

The Fortinet FortiGate 91G is a performance-optimized next-generation firewall tailored for modern branch and distributed enterprise deployments. Featuring Fortinet’s latest SP5 (Security Processing Unit 5) architecture, this model delivers exceptional throughput, enhanced security inspection, and integrated Power over Ethernet (PoE), all in a compact, fanless form factor ready for cloud-connected edge environments.

Ports and Connectivity

Comprehensive connectivity with enterprise PoE support:

• 2 x GE RJ45 WAN Ports

• 1 x GE RJ45 DMZ Port

• 6 x GE RJ45 Internal Ports

• 2 x GE RJ45 PoE/+ Ports: IEEE 802.3af/at support (up to 60W total)

• 2 x GE RJ45 + 2 x GE SFP Shared Media Pairs: Ideal for fiber/copper uplink flexibility

• 1 x USB Port: Supports 3G/4G LTE failover modem or local storage

• 1 x RJ45 Console Port: Local management and configuration access

Ideal for powering access points, cameras, and VoIP phones while supporting advanced WAN failover and fiber connectivity.

Performance and Security Features

Advanced throughput and inspection in a compact, branch-optimized firewall:

• Firewall Throughput: 20 Gbps

• Threat Protection Throughput: 3.5 Gbps

• NGFW Throughput: 3.5 Gbps

• SSL Inspection Throughput: 2.5 Gbps

• IPS Throughput: 4.5 Gbps

• IPsec VPN Throughput: 11 Gbps

• Concurrent Sessions: 3 million

• New Sessions/Second: 150,000

Delivers high-speed encrypted traffic inspection, secure SD-WAN, and comprehensive application visibility and control.

Power and Efficiency

Quiet and efficient with integrated power delivery:

• Power Consumption (Average / Max): 15.1W / 27.4W

• Power Input: External 54V DC adapter (included)

• PoE Output: IEEE 802.3af/at PoE across 2 ports with up to 60W shared

Silent and energy-conscious—perfect for offices, retail counters, or server rooms with sensitive acoustic environments.

Physical Design and Mounting

Compact and deployment-friendly:

• Form Factor: Desktop (rackmount kit optional)

• Dimensions (H x W x D): 1.65 x 8.5 x 6.3 in (42 x 216 x 160 mm)

• Weight: 2.9 lbs (1.32 kg)

Designed for flexible placement in desktop, cabinet, or wall-mounted installations.

Environmental Tolerance

Built for consistent uptime across various deployment scenarios:

• Operating Temp: 32°F to 104°F (0°C to 40°C)

• Storage Temp: -31°F to 158°F (-35°C to 70°C)

• Humidity: 10% to 90% non-condensing

• Noise Level: 0 dBA (fanless)

Ideal for continuous use in business-critical, quiet, or space-restricted environments.

Management and Integration

Unified network and security management across all edges:

• FortiOS: Fortinet’s integrated operating system supporting NGFW, SD-WAN, ZTNA, automation, and more

• Management Interfaces: FortiCloud, FortiManager, GUI, CLI, REST API

• Security Fabric Integration: Full visibility and automated policy enforcement across Fortinet’s ecosystem

Enables centralized oversight and rapid provisioning for large-scale or multisite environments.

Licensing and Subscription Services

Industry-leading security services to safeguard your network:

• FortiGuard Security Services: Includes AI-powered IPS, antivirus, sandboxing, web filtering, and more

• FortiCare Support: 24/7 global support, firmware upgrades, and advanced RMA options

• Available Bundles: Base, UTP (Unified Threat Protection), and Enterprise

Customize your security suite to meet compliance, performance, and budget needs.

Certifications and Compliance

Meets global regulatory and safety standards:

• Certifications: FCC, CE, UL, CB, RCM, VCCI

Scalable, PoE-Enabled Security for the Intelligent Branch

The Fortinet FortiGate 91G (FG-91G) is a versatile, future-ready firewall that provides robust throughput, PoE support, and AI-powered threat protection in a sleek, desktop form factor. Perfect for IT teams securing distributed enterprises or advanced branch locations, it simplifies edge protection without compromising performance.