QDD-400G-LR4 Cisco Compatible 400G QSFP-DD LR4 10km SMF Transceiver

The QDD-400G-LR4 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: LR4
• Fiber Type: SMF
• Reach: 10km
• Connector: Duplex LC
• OEM Equivalent: QDD-400G-LR4

OEM-compatible and MSA-compliant. Manufactured to supplier 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 TenFourOptics' GreenLights4Life® lifetime warranty — buy it once, covered forever. In stock and ships same or next business day. Trusted by network engineers and procurement teams across North America for over 10 years.