Hot-swappable fan module for the FortiSwitch AX9004G four-slot chassis. Three are required for normal operation, whatever combination of supervisor modules and line cards is installed. Front-to-back airflow, replaceable without taking the chassis down.


The configurations most customers buy. The complete catalog is further down.
| Configuration | Price & action |
|---|---|
| FortiSwitch AX9004G Fan Module. Part of the FortiSwitch AX9000G modular chassis family. | View productFS-AX9004G-FAN CAD$5,239.65Add to cart |
Brand-new, sealed · ships same / next business day · price shown live in your selected currency.
Available by quote — ask us for pricing.
FortiCare and subscriptions delivered electronically worldwide · prices shown live in your selected currency · add-to-cart enabled when in stock.
The FS-AX9004G-FAN is the cooling module for the FortiSwitch AX9004G four-slot chassis. Fortinet requires three fan modules for normal operation regardless of the number and combination of supervisor modules and line cards installed — this is not scaled to the load, so even a lightly populated chassis needs all three.
The modules are hot swappable, so a failed unit can be replaced while the chassis stays in service. Airflow through the AX9004G is front to back, and the chassis dissipates up to 18,000 BTU/h at maximum configuration, which is worth planning for in rack and room cooling.
This module fits the four-slot AX9004G only. The eight-slot FS-AX9008G uses its own fan module, FS-AX9008G-FAN — the two are not interchangeable. Power supplies, by contrast, are shared between both chassis.

A quick guide to choosing the right AX9000G component.
| Fan module | Fits | Hot swap | |
|---|---|---|---|
| FS-AX9004G-FAN | FS-AX9004G (4-slot) | Hot swappable | Viewing |
| FS-AX9008G-FAN | FS-AX9008G (8-slot) | Hot swappable | View → |
Fan modules are chassis specific and are not interchangeable between the two chassis.
| Type | Hot-swappable fan module |
| Chassis compatibility | FS-AX9004G only (the FS-AX9008G uses FS-AX9008G-FAN) |
| Quantity required | 3 per chassis, regardless of supervisor and line-card count |
| Air flow | Front to back |
| Hot swap | Yes — replace without taking the chassis out of service |
| Chassis heat dissipation | Up to 18,000 BTU/h at maximum configuration |
| Chassis noise level | 75 dB measured at 25°C |
| Chassis operating temperature | 0°C to 40°C |
Source: official Fortinet FortiSwitch-AX9000G Series datasheet, December 2025.

Every Fortinet purchase from DataCenter360.ca is backed by hands-on services across the full lifecycle — from rollout to round-the-clock protection.
Every part of the AX9000G family is ordered separately, so it is worth checking what fits where before you buy.
| Fan module | Fits | Hot swap | |
|---|---|---|---|
| FS-AX9004G-FAN | FS-AX9004G (4-slot) | Hot swappable | Viewing |
| FS-AX9008G-FAN | FS-AX9008G (8-slot) | Hot swappable | View → |
Fan modules are chassis specific and are not interchangeable between the two chassis.
The AX9000G family is two chassis, one supervisor module and five line cards, plus fan modules and power supplies. Everything is hot swappable.
The AX9000G chassis family and the parts that go in it.
Every available SKU for the FS-AX9004G-FAN. In stock, brand new; support and licensing delivered electronically worldwide.
| Configuration | Price & action |
|---|---|
| FortiSwitch AX9004G Fan Module. Part of the FortiSwitch AX9000G modular chassis family. | View productFS-AX9004G-FAN CAD$5,239.65Add to cart |
Brand-new, sealed · ships same / next business day · price shown live in your selected currency.
Available by quote — ask us for pricing.
Available by quote — ask us for pricing.
FortiCare and subscriptions delivered electronically worldwide · prices shown live in your selected currency · add-to-cart enabled when in stock.
The other parts you need to put this component into service.
This part goes into an AX9000G chassis. If you are building one from scratch, these are the other pieces you will need.
Three. Fortinet requires three fan modules for normal operation regardless of the number and combination of supervisor modules and line cards installed. The requirement does not scale down for a lightly populated chassis — a chassis with one supervisor and one line card still needs all three.
No. The FS-AX9004G-FAN fits the four-slot FS-AX9004G only. The eight-slot FS-AX9008G uses its own module, FS-AX9008G-FAN. Power supplies are shared between the two chassis, but fan modules are not.
Yes. The fan modules are hot swappable, as are the supervisor modules, line cards and power supplies. A failed unit can be swapped with the chassis in service, which is the point of keeping a spare.
Up to 18,000 BTU/h at maximum configuration, with front-to-back airflow and a measured noise level of 75 dB at 25°C. Operating temperature range is 0°C to 40°C. Worth checking against your rack and room cooling before installation.
No. The AX9000G chassis ships empty — fan modules, supervisor modules, line cards and power supplies are all ordered separately. Ask us to quote a complete system and we will make sure the three fans are on it.