Swapping the Cisco original for the SFP-10/25G-CSR-S changes nothing the host can measure: the same 25G-class module in the same SFP package, matched point for point so the port configuration carries over untouched. Cisco platforms read its coding as expected and bring the link up without intervention.
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Form Factor: SFP
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OEM Equivalent: SFP-10/25G-CSR-S
Compatibility: Documented OEM compatibility (Cisco published compatibility documentation): this module is accepted in 25G SFP28 ports on the ASR 9000 Series, Catalyst 9300 Series, Catalyst 9500 Series, Catalyst 9600 Series, NCS 540 Series, NCS 5500 Series, Nexus 9200 Series, Nexus 9300 Series, Nexus 9500 Series, and Secure Firewall 3100 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.
Catalogued under the SFP28 type, it follows the MSA's mechanical and management rules and sits alongside other compliant optics in the same line card without special handling. DDM/DOM diagnostics remain available after the swap, preserving monitoring continuity. 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.
