Fortinet FN-CABLE-QSFPDD-8SFP56-LB5 QSFP-DD Cable

FN-CABLE-QSFPDD-8SFP56-LB5 Exact Order Identity

FN-CABLE-QSFPDD-8SFP56-LB5 is a physical 2.5 m 400 GE to eight 50 GE breakout cable. It is not a FortiCare entitlement, subscription or software license.

Published link boundary

The exact order row identifies 400 GE, a published reach or assembly length of 2.5m, Integrated cable terminations connectivity and Passive twinax copper media. The stated operating range is 0°C to 70°C.

Model-specific deployment decision

Document the longer 2.5-metre fan-out route, eight SFP56 endpoint labels and support for the branch bundle. Validate every lane after permanent dressing and retain a complete branch acceptance table.

Eight-branch inventory and route matrix

Create an eight-row handover table before the 2.5-metre fan-out is unpacked. Each row must identify QSFP-DD host lane, SFP56 branch label, destination device and port, required 50 GE mode, FEC policy and acceptance owner. Photograph branch support through the rack crossing so later moves do not swap lane identity.

Complete fan-out acceptance

Exercise all eight destinations simultaneously after final dressing. Preserve per-branch counters, corrected and uncorrected FEC results and any disabled lane. The assembly is not accepted if only the populated branches pass or if the branch bundle places extraction force on the host cage.

Receiving and traceability

Match the packaging label, full SKU and quantity to the purchase line before breaking the seal. Record serial or lot identifiers where present, the installed endpoint models, port numbers and final acceptance date. Pack boundary: One orderable unit unless the exact SKU states a pack.

Compatibility control

Confirm this exact order code in Fortinet's current transceiver and cable compatibility table for both endpoint models and software releases. A matching connector or form factor alone does not establish support, reach or breakout behavior.

Included and excluded scope

The terminations are included in the cable assembly. Switches, interface licenses, breakout configuration and unrelated patching are not included.

Official evidence

Fortinet Transceivers and Cables data sheet is the manufacturer source for the order identity and physical link facts. Preserve the accepted compatibility result with the project record.