The AT-400G-FR4 is a 400G QSFP-DD optical transceiver compatible with Allied Telesis platforms. Plug-and-play, no configuration required.
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Form Factor: QSFP-DD
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Data Rate: 400G
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Protocol: FR4
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Fiber Type: SMF
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Reach: 2km
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Connector: Duplex LC
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OEM Equivalent: AT-400G-FR4
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.
