QDD-400G-DR4 Cisco Compatible 400G QSFP-DD DR4 500m SMF Transceiver

The QDD-400G-DR4 is a 400G QSFP-DD optical transceiver compatible with Cisco platforms. Plug-and-play, no configuration required.

• Form Factor: QSFP-DD
• Data Rate: 400G
• Protocol: DR4
• Wavelength: 1310nm
• Fiber Type: SMF
• Reach: 500m
• Connector: MPO-12
• OEM Equivalent: QDD-400G-DR4

Compatibility: Documented OEM compatibility (Cisco published compatibility documentation): this module is accepted in 400G QSFP-DD ports on the ASR 9000 Series, Catalyst 9500 Series, Catalyst 9600 Series, Cisco 8000 Series, NCS 540 Series, NCS 5500 Series, Nexus 3000 Series, Nexus 9300 Series, Nexus 9500 Series, and Nexus 9800 Series. This module follows Cisco's published compatibility matrix; for your exact line card or OS release, email 10.4@tenfouroptics.com and we'll confirm fit.

Tested & Proven: Every TenFour Optics part is coded, tested, and verified before shipment — see Tested & Proven.

OEM-compatible and MSA-compliant. Manufactured to MSA specifications following ISO-certified processes. Class 1 laser certified, RoHS compliant. Digital Diagnostic Monitoring (DDM/DOM) supported. Every module is tested for traffic conformity per supported layer 2/3 protocols, DOM threshold verification, EEPROM/MSA value verification, serial number verification, and optical cleanliness before shipment.

Backed by the GreenLights4Life® Limited Lifetime Replacement Warranty. In-stock items ship same or next business day — contact 10.4@tenfouroptics.com to confirm availability and lead time.