QSFP-100G-4W40-I Cisco Compatible 100G QSFP28 40km SMF Transceiver

Decode the label and the specification is already stated: QSFP-100G-4W40-I — 100G, QSFP28, 40km over single-mode fiber, duplex LC termination — and TenFourOptics builds the Cisco-coded version of exactly that. A 40km rating carries the link well beyond campus distances from a standard switch port, and the host sees a correctly identified module with DDM/DOM data live from the moment it seats in the cage. The -I part code is carried exactly as Cisco writes it, so inventory records and interface configs stay consistent.

• Form Factor: QSFP28
• Data Rate: 100G
• Fiber Type: SMF
• Reach: 40km
• Connector: Duplex LC
• OEM Equivalent: QSFP-100G-4W40-I

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.

Compliance with the module's MSA is validated at the bench per serial. 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.