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Desktop firewall appliance with silver metal case and front RJ45 ports

Fortinet

Fortinet FG91G firewall appliance 120GB SSD

SKU CH-B622-9CET2 MPN FG91G

Desktop firewall appliance with 8 GE RJ45 ports, 2 shared 10GE ports and a 120 GB SSD, delivering 2.5 Gbps NGFW throughput and 2.2 Gbps threat protection

  • Form FactorDesktop
  • Ports1x RJ45 Console and 1x USB Management Port 2x 10/5/2.5/ GE R
  • VPNSystem Performance - Enterprise Traffic Mix IPS Throughput:
  • Dimensions1.65 x 8.5 x 7.0 inches
  • Weight2.47 lbs (1.12 kg)

Model FortiGate 91G

Option Hardware Only

  • Enterprise-grade threat protection at 2.2 Gbps throughput
  • 5 Gbps IPS throughput inspects traffic without slowing the network
  • 28 Gbps firewall throughput handles heavy enterprise loads
  • 120 GB SSD provides local storage for logs and analytics
  • Desktop form factor fits standard office or branch deployments

FortiGate 91G Desktop Firewall

The Fortinet FortiGate 91G is a desktop firewall appliance designed for small to mid-sized enterprises requiring consolidated networking and security. It runs FortiOS to deliver security-driven networking with AI/ML-powered FortiGuard services. The unit includes a 120GB SSD for local logging and reporting. It suits teams wanting unified threat management without rackmount infrastructure.

2.5 Gbps NGFW Throughput

The decisive specification is the NGFW throughput of 2.5 Gbps measured with enterprise traffic mix. This rate determines whether the appliance can inspect application traffic at your WAN speed without becoming a bottleneck. Threat protection throughput reaches 2.2 Gbps while IPS throughput reaches 4.5 Gbps. Buyers needing higher inspected throughput should evaluate larger models.

Desktop Installation and Port Layout

The desktop form factor measures 1.65 x 8.5 x 7.0 inches and weighs 2.47 lbs, so it sits on a shelf or bench without rails. Front access provides 8x GE RJ45 ports and 2x shared media ports that accept either 10GE RJ45 or SFP+ modules. A console port and USB management port sit alongside. Misidentifying the shared media ports as additional independent interfaces is the common configuration error.

Highlights

  • Enterprise-grade threat protection at 2.2 Gbps throughput
  • 5 Gbps IPS throughput inspects traffic without slowing the network
  • 28 Gbps firewall throughput handles heavy enterprise loads
  • 120 GB SSD provides local storage for logs and analytics
  • Desktop form factor fits standard office or branch deployments

Specifications

BrandFortinet
SeriesFortiGate 90G Series
ModelFortiGate 91G
Part NumberFG-91G
Form FactorDesktop
Ports1x RJ45 Console and
1x USB Management Port
2x 10/5/2.5/ GE RJ45 or 10GE/GE SFP+/SFP Shared Media Ports
8x GE RJ45 Ports
VPNSystem Performance - Enterprise Traffic Mix
IPS Throughput: 4.5 Gbps
NGFW Throughput: 2.5 Gbps
Threat Protection Throughput: 2.2 Gbps
System Performance and Capacity
Firewall Throughput (1518 / 512 / 64 byte UDP packets): 28 / 28 / 27.9 Gbps
Firewall Latency (64 byte UDP packets): 3.23 µs
Firewall Throughput (Packets Per Second): 41.85 Mpps
Concurrent Sessions (TCP): 3 M
New Sessions/Second (TCP): 124 000
Firewall Policies: 5000
IPsec VPN Throughput (512 byte): 25 Gbps
Gateway-to-Gateway IPsec VPN Tunnels: 200
Client-to-Gateway IPsec VPN Tunnels: 2500
SSL-VPN Throughput: 1.4 Gbps
Con
Dimensions1.65 x 8.5 x 7.0 inches
Weight2.47 lbs (1.12 kg)
Shipping weight2.72 kg
Package size254 × 203 × 152 mm

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Questions about this item

What does the 2.5 Gbps NGFW throughput mean for daily traffic?

It is the maximum rate the appliance can inspect application traffic with intrusion prevention and application control enabled, measured using an enterprise traffic mix.

What do the two shared-media 10G ports actually support?

Each port can run at 10 Gbps, 5 Gbps, 2.5 Gbps or 1 Gbps over RJ45, or at 10 Gbps or 1 Gbps with an SFP+ or SFP module; only one medium per port is active at a time.

What space and weight should I plan for the desktop unit?

The chassis measures 1.65 x 8.5 x 7.0 inches and weighs 2.47 lbs, so it fits on a shelf or desk without special mounting hardware.

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