Cisco-coded · QSFP-100G-ER4L-TFO
The QSFP-100G-ER4L is a 100G QSFP28 optical transceiver engineered as a drop-in equivalent for Cisco platforms, a like-for-like replacement that the host accepts as native, hot-swappable and ready out of the box.
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Form Factor: QSFP28
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Data Rate: 100G
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Protocol: ER4
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Fiber Type: SMF
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Reach: 30km
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Connector: Duplex LC
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OEM Equivalent: QSFP-100G-ER4L
Compatibility: Documented OEM compatibility (Cisco published compatibility documentation): this module is accepted in 100G QSFP28 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 9200 Series, Nexus 9300 Series, and Nexus 9500 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.
It is qualified against Cisco host platforms and tested end to end so it behaves exactly as the OEM module it replaces, slotting into existing designs without surprises. The result is a like-for-like swap that protects the original network design while removing OEM-optics cost from the bill of materials. It operates 30km.
Coded to the host EEPROM, it comes up as a genuine module: full diagnostic visibility, no compatibility warnings, and side-by-side operation with optics already in the chassis.
Each unit is programmed to match Cisco host values and bench-tested for traffic conformity, DOM-threshold accuracy, and optical cleanliness before it leaves the bench. Class 1 laser certified and RoHS compliant.
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.
