Hosts specified around Cisco's FC4G-SW optic accept the DS-SFP-FC4G-SW from TenFourOptics as a matched substitute: designation and coding are identical, so platform software treats it as the module it expects and lights the port without intervention. It is built in the SFP form factor and reports through DDM/DOM, giving the host the same diagnostic visibility the original provided.
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Form Factor: SFP
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OEM Equivalent: DS-SFP-FC4G-SW
Compatibility: Confirm fit for your platform before you buy — email 10.4@tenfouroptics.com with your platform and we'll confirm against the vendor's current documentation.
Tested & Proven: Every TenFour Optics part is coded, tested, and verified before shipment — see Tested & Proven.
Each unit is qualified to the MSA at production test, with coding and diagnostics confirmed before packing. Since the SW variant designation is preserved exactly, compatibility matrices and support documentation keyed to the Cisco number remain accurate after the substitution. 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.
