SFP-10/25G-CSR-S Transceiver Modules

Yes, most 25G SFP28 ports are backward compatible with 10G SFP+ modules, since SFP28 ports typically support auto-negotiation for both speeds. However, physical compatibility does not guarantee optimal performance, so it's important to verify vendor-specific interoperability and firmware support before deployment.

A 25G SFP (SFP28) is a compact transceiver module supporting 25 Gigabit Ethernet, commonly used in modern data center switches and servers. It offers higher bandwidth than 10G SFP+ modules while maintaining the same form factor, enabling denser, faster network connections without changing cabling infrastructure.

The CSR-S designation indicates a dual-rate module supporting both 10G and 25G Ethernet over short-range multimode fiber, while standard 10GBASE-SR modules like the EX-SFP-10GE-SR support only 10 Gigabit Ethernet. The dual-rate design offers greater flexibility for mixed-speed network environments and future upgrades.

Short-range multimode transceivers like the SFP-10/25G-CSR-S and comparable 10GBASE-SR modules typically support up to 300m over OM3 multimode fiber, or up to 400m over OM4 fiber, depending on the fiber grade and installation quality.

Yes, when sourced from a reputable reseller. Terabit Systems tests every module through a 5-step Quality Assurance process and backs units with warranty coverage, ensuring refurbished transceivers perform reliably in production data center and enterprise environments at a fraction of OEM pricing.

Compatibility depends on the switch model and port type. Dual-rate SFP-10/25G-CSR-S modules are designed to work across Juniper EX Series and other major vendor switches supporting SFP28 ports, but it's recommended to confirm compatibility with your specific hardware before purchase.