Fortinet 400GbE QSFP-DD to 8x50GbE SFP56 Breakout DAC, 1m (FN-CABLE-QSFPDD-8SFP56-L1)

A 400GbE QSFP-DD port runs eight 50G PAM4 lanes, and this breakout maps each lane to its own 50GbE SFP56 link. The FN-CABLE-QSFPDD-8SFP56-L1 is Fortinet’s 1-metre passive version: a single QSFP-DD connector on the 400G side splitting into eight SFP56 tails on the 50G side, all optics integrated. It lets one flagship-FortiGate 400G port fan out to eight 50G devices on low-power copper, and it is Fortinet-qualified so every connector is recognized.

Specifications

Where this cable fits

This is the densest fan-out in the range: one 400G QSFP-DD port on a top-end FortiGate feeds eight 50G SFP56 access ports, maximizing port count from a single cage. It suits a 400G aggregation layer bridging to 50G servers or access switches in the same or an adjacent rack, keeping all eight links on passive copper.

Compatibility

The QSFP-DD end goes into a 400GbE port that supports 8x50G breakout; the eight SFP56 ends land on 50GbE SFP56 ports. Confirm the QSFP-DD port is set to 8x50G breakout mode on your FortiGate. For a 2.5m reach, use the FN-CABLE-QSFPDD-8SFP56-LB5. For a 2x200G split instead, use the FN-CABLE-QSFPDD-2QSFP56-L1.

Buying from DataCenter360.ca

DataCenter360.ca stocks genuine Fortinet FN-CABLE-QSFPDD-8SFP56-L1 breakout cables in Canada with fast dispatch. As a Fortinet Select Partner, we supply the appliance-accepted assembly so both the QSFP-DD and SFP56 ends pass compatibility. Order online or request project pricing for a high-density 400G build.