Cisco 400G Transceiver Modules
400G QSFP-DD modules are the current industry standard for high-density networking. Featuring an eight-channel electrical interface with wide range of reaches from SR8 to ultra-long-distance LR4, with backward compatibility to QSFP28 and QSFP56.
Product Overview
Industry Standard
400G QSFP-DD is the prevailing standard for data center spine-leaf and DCI deployments worldwide.
Multiple Reach Options
From SR8 for short intra-rack links to LR4 for 10km campus spans, covering every use case.
Backward Compatible
QSFP-DD ports accept QSFP28 and QSFP56 modules for seamless migration from 100G and 200G.
8-Channel Interface
Eight electrical lanes at 50G PAM4 each deliver 400G aggregate bandwidth in a single module.
High Density
QSFP-DD form factor enables 36-port line cards for maximum bandwidth per rack unit.
Cisco Certified
Tested and certified on Cisco platforms for superior performance with full TAC support.
Ready to deploy 400G?
Our optics specialists will build a custom quote — including volume discounts, reach option guidance, and compatibility verification.
- Volume and project-based pricing available
- Cisco Smart Net Total Care bundling
- Compatibility verification with your platform
- Response within one business day