400 gigabit line card for the FortiSwitch AX9000G chassis. Eight QSFP-DD ports running at 400, 100 or 40 GE — the highest-speed card in the family, for spine and core links beyond what 100 GE can carry.


The configurations most customers buy. The complete catalog is further down.
| Configuration | Price & action |
|---|---|
| FortiSwitch AX9000G-LC400. Part of the FortiSwitch AX9000G modular chassis family. | View productFS-AX9000G-LC400 |
Brand-new, sealed · ships same / next business day · price shown live in your selected currency.
| Support | 1 Year | 3 Years | 5 Years |
|---|---|---|---|
| FortiCare Essential Renewal only — not sold with initial hardware purchase. | View productFC-10-YAKG7-314-02-12 | View productFC-10-YAKG7-314-02-36 | View productFC-10-YAKG7-314-02-60 |
| FortiCare Premium 24×7 TAC, advanced hardware replacement & firmware updates. Most-purchased tier for new APs. | View productFC-10-YAKG7-247-02-12 | View productFC-10-YAKG7-247-02-36 | View productFC-10-YAKG7-247-02-60 |
FortiCare and subscriptions delivered electronically worldwide · prices shown live in your selected currency · add-to-cart enabled when in stock.
The FS-AX9000G-LC400 is the 400 gigabit line card for the FortiSwitch AX9000G chassis family. Eight QSFP-DD ports run at 400, 100 or 40 GE, making it the highest-speed option in the range and the card to reach for on spine and core links where 100 GE is no longer enough.
Full specifications are not yet published. Fortinet's current FortiSwitch-AX9000G Series datasheet, revision R01 of December 2025, covers the four-slot chassis and the LC10P, LC10S, LC25 and LC100 line cards; the LC400 is listed on the price list as a new product. The port configuration above is confirmed by Fortinet's ordering information. We do not publish packet buffer, power or weight figures for this card because Fortinet has not released them, and we will not estimate them.
The card fits both the four-slot FS-AX9004G and the eight-slot FS-AX9008G and occupies one line-card slot, like every other AX9000G line card. Ask us to confirm current specifications, firmware requirements and availability before you order.

A quick guide to choosing the right AX9000G component.
| Line card | Ports | Speeds | PoE | |
|---|---|---|---|---|
| AX9000G-LC10P | 48× RJ45 + 2× SFP+ | 1/2.5/5/10 GE | 802.3bt, 4,320 W | View → |
| AX9000G-LC10S | 48× SFP+ + 2× SFP+ | 1/10 GE | — | View → |
| AX9000G-LC25 | 48× SFP28 + 4× QSFP28 | 10/25 GE + 40/100 GE | — | View → |
| AX9000G-LC100 | 32× QSFP28 | 40/100 GE | — | View → |
| AX9000G-LC400 | 8× QSFP-DD | 40/100/400 GE | — | Viewing |
All five line cards fit both the FS-AX9004G and the FS-AX9008G and occupy one line-card slot each. Only the LC10P has Power over Ethernet.
| SKU | FS-AX9000G-LC400 |
| Ports | 8× 400/100/40 GE (QSFP-DD / QSFP28 / QSFP+) |
| Chassis compatibility | FS-AX9004G and FS-AX9008G |
| Slots used | 1 line-card slot |
| Hot swap | Yes |
| Availability | Confirmed at quote |

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.
| Line card | Ports | Speeds | PoE | |
|---|---|---|---|---|
| AX9000G-LC10P | 48× RJ45 + 2× SFP+ | 1/2.5/5/10 GE | 802.3bt, 4,320 W | View → |
| AX9000G-LC10S | 48× SFP+ + 2× SFP+ | 1/10 GE | — | View → |
| AX9000G-LC25 | 48× SFP28 + 4× QSFP28 | 10/25 GE + 40/100 GE | — | View → |
| AX9000G-LC100 | 32× QSFP28 | 40/100 GE | — | View → |
| AX9000G-LC400 | 8× QSFP-DD | 40/100/400 GE | — | Viewing |
All five line cards fit both the FS-AX9004G and the FS-AX9008G and occupy one line-card slot each. Only the LC10P has Power over Ethernet.
The AX9000G family is two chassis, one supervisor module and five line cards, plus fan modules and power supplies. Everything is hot swappable.
Every AX9000G line card, side by side. Any combination fits either chassis.
Every available SKU for the FS-AX9000G-LC400. In stock, brand new; support and licensing delivered electronically worldwide.
| Configuration | Price & action |
|---|---|
| FortiSwitch AX9000G-LC400. Part of the FortiSwitch AX9000G modular chassis family. | View productFS-AX9000G-LC400 |
Brand-new, sealed · ships same / next business day · price shown live in your selected currency.
| Support | 1 Year | 3 Years | 5 Years |
|---|---|---|---|
| FortiCare Essential Renewal only — not sold with initial hardware purchase. | View productFC-10-YAKG7-314-02-12 | View productFC-10-YAKG7-314-02-36 | View productFC-10-YAKG7-314-02-60 |
| FortiCare Premium 24×7 TAC, advanced hardware replacement & firmware updates. Most-purchased tier for new APs. | View productFC-10-YAKG7-247-02-12 | View productFC-10-YAKG7-247-02-36 | View productFC-10-YAKG7-247-02-60 |
| FortiCare Elite Priority TAC queue, quarterly review & dedicated team. | View productFC-10-YAKG7-284-02-12 | View productFC-10-YAKG7-284-02-36 | View productFC-10-YAKG7-284-02-60 |
| FortiCare Premium → Elite Upgrade Step an existing FortiCare Premium contract up to Elite mid-term. | View productFC-10-YAKG7-204-02-12 | View productFC-10-YAKG7-204-02-36 | View productFC-10-YAKG7-204-02-60 |
| RMA | 1 Year | 3 Years | 5 Years |
|---|---|---|---|
| Next-Calendar-Day RMA Replacement unit dispatched the next calendar day. | View productFC-10-YAKG7-210-02-12 | View productFC-10-YAKG7-210-02-36 | View productFC-10-YAKG7-210-02-60 |
| 4-Hour Delivery RMA Advance replacement delivered within 4 hours. | View productFC-10-YAKG7-211-02-12 | View productFC-10-YAKG7-211-02-36 | View productFC-10-YAKG7-211-02-60 |
| 4-Hour Delivery + Onsite RMA 4-hour part plus a Fortinet onsite engineer dispatched. | View productFC-10-YAKG7-212-02-12 | View productFC-10-YAKG7-212-02-36 | View productFC-10-YAKG7-212-02-60 |
| Secure RMA Keep your failed unit — no return of the defective AP required. | View productFC-10-YAKG7-301-02-12 | View productFC-10-YAKG7-301-02-36 | View productFC-10-YAKG7-301-02-60 |
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.
A line card does not work on its own. It needs an AX9000G chassis with a supervisor module, fan modules and power supplies. The optics and cables below match this card's ports.
Eight QSFP-DD ports running at 400, 100 or 40 GE, according to Fortinet’s ordering information. That makes it the highest-speed line card in the AX9000G family. Because the ports step down, existing 100 and 40 GE optics can terminate on the same card.
Not yet. Fortinet’s current FortiSwitch-AX9000G Series datasheet covers the four-slot chassis and the LC10P, LC10S, LC25 and LC100 cards; the LC400 is listed as a new product on the price list. We publish the port configuration Fortinet has confirmed and do not estimate packet buffer, power or weight figures that have not been released. Ask us and we will confirm directly.
Both. It installs in the four-slot FS-AX9004G and the eight-slot FS-AX9008G and occupies one line-card slot, the same as every other AX9000G line card.
At present the only 400 GE part on Fortinet’s price list is the FN-CABLE-QSFPDD-AOC-03 active optical cable, 3 m. There is no 400 GE QSFP-DD transceiver module listed. Talk to us about your reach requirements before ordering — we would rather confirm than have you buy the wrong part.
Yes. A line card does not work on its own — it needs an AX9004G or AX9008G chassis with at least one FS-AX9000G-SUP supervisor module, fan modules and power supplies. Ask us to quote the complete system if you are building a chassis from scratch.
No. The AX9000G family is managed through FortiSwitchNMS, Fortinet’s network management platform. Fortinet has stated that Security Fabric integration through FortiLink is planned for this platform, but it is not available today, so an AX9000G chassis is not managed from a FortiGate the way fixed-configuration FortiSwitch models are.