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.
Features and Benefits
The industry-standard 400G platform for every reach.
400G QSFP-DD transceivers deliver high-density connectivity with reach options from 100 meters to 10 kilometers, supporting diverse data center and campus architectures.
DR4 — 500m Reach
Single-mode fiber reach up to 500 meters for intra-campus and inter-building connections.
FR4 — 2km Reach
Four-wavelength CWDM over duplex SMF for inter-building and metro data center interconnect.
LR4 — 10km Reach
Extended-reach optics for campus backbone and data center interconnect up to 10 kilometers.
SR8 — Short Range
Multimode fiber for short intra-rack and top-of-rack connections at lowest cost per port.
Backward Compatible
QSFP-DD ports natively accept QSFP28 and QSFP56 modules for phased migration.
Power Efficient
Optimized power consumption per gigabit reduces operational costs and cooling requirements.
Feature & Benefit Details
Specifications
QSFP-DD 400G Module
Reach Options
Documentation
400G QSFP-DD Data Sheet
Cisco 400G QSFP-DD transceiver modules data sheet. Full specifications, reach options, ordering information, and compatibility details.
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