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SFP-10/25G-CSR-S
Cisco 10/25GBASE-CSR S-Class SFP28 Transceiver Module, 300m...
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SFP-10/25G-CSR-S is a Cisco S-Class SFP28 optical transceiver module for pluggable Ethernet interface slots. The module provides dual-rate 10 Gigabit Ethernet and 25 Gigabit Ethernet operation on supported Cisco SFP28 ports. Its optical interface uses multi-mode fiber for duplex optical transmission at the physical layer. The front interface uses dual LC/PC contacts for transmit and receive paths on separate fiber strands. The optical channel operates across the 840 to 860 nm wavelength band for transmit and receive signals. Its maximum reach is 400 m when the installed fiber meets Cisco quality conditions. The operating profile uses Cisco's commercial temperature class for this S-Class CSR optic. SFF-8472 diagnostic monitoring support provides digital access to module temperature, voltage, and optical status readings. The S-Class SKU variant belongs to Cisco's 25G SFP28 transceiver portfolio for commercial-temperature modules.
TX power range delivers -7.3 to +2.4 dBm at 10G and -6.0 to +2.4 dBm at 25G. RX sensitivity reaches -9.9 dBm at 10G and -8.7 dBm at 25G across the receive path. RX overload point maintains +2.4 dBm for both optical receive operating modes. SFP-10/25G-CSR-S follows SFF-8402 for the SFP28 pluggable transceiver interface. IEEE 802.3-2015 supplies the base Ethernet standard for the module family. IEEE P802.3by covers MAC parameters and physical-layer management for 25 Gb/s operation. IEEE P802.3cc covers serial 25 Gb/s Ethernet physical-layer parameters for optical operation. At 1.2 W, maximum power consumption matches Cisco's 25G port cabling specification. With RoHS 6 compliance, the hardware meets Cisco's stated environmental materials requirement. IEC60825-1 Class 1 laser safety applies to the optical transmitter assembly. Average optical power applies to the transmitter and receiver values. For FCoE operation, Cisco requires appropriate host software support on the attached switching platform.
Cisco Catalyst 9300, Catalyst 9500, Nexus 9300, and ASR 9000 families provide documented platform contexts. C9300-24H and C9500-48Y4C configurations represent specific switch contexts for this optical module. Network teams deploy this optic in data centre interconnect, campus backbone, aggregation, and edge uplink roles. OM3, OM4, and OM5 cable grades define the documented cabling plan. OM2 appears only for shorter legacy spans under Cisco reach limits. Cisco platform validation remains part of the buying workflow before production network rollout. Buy SFP-10/25G-CSR-S from ORM Systems in new and certified refurbished condition. Certified refurbished stock is tested before dispatch for optical stability and physical condition. ORM Systems supplies this SKU for planned upgrades, replacement spares, and matched-link deployments. Order SFP-10/25G-CSR-S when 10G migration and 25G uplink readiness share one procurement requirement. ORM Systems provides bulk quotation support for enterprise projects and volume buyers.
SFP-10/25G-CSR-S price is $287.00, a 77.8% saving from the Cisco list price of $1,292.00. SFP-10/25G-CSR-S is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for SFP-10/25G-CSR-S for additional pricing. Browse the full Cisco 25G Optical Modules series or explore all Cisco products.
SFP-10/25G-CSR-S sits in Cisco SFP28 uplink ports between distribution and core switches where existing duplex MMF spans remain in place. Engineers run the optic at 10G during staged migration, then move the same link to 25G after both endpoints support SFP28 operation. OM3 links terminate up to 300m and OM4 links terminate up to 400m, with RS-FEC enabled for full 25G reach. Network teams preserve patch-panel layouts and validate fiber quality during cutover. The network gains higher backbone capacity without replacing qualified multimode fiber runs.
The module occupies access-switch uplink ports and presents closet traffic to distribution switches across duplex LC multimode fiber. SFP-10/25G-CSR-S matches access closets where cable paths exceed standard 25G SR distances but remain within 300m on OM3 or 400m on OM4. Engineers configure the host port speed, confirm Cisco platform support, clean LC/PC connections, and align FEC settings before turn-up. The optic keeps transceiver selection consistent across repeated closet builds. The result is a stable higher-speed handoff across existing campus fiber plant.
Aggregation switches use Cisco SFP28 ports with SFP-10/25G-CSR-S to collect 10G or 25G traffic from nearby network blocks over multimode fiber. The 850nm CSR optic keeps the link on duplex LC infrastructure while extending 25G reach beyond the 70m OM3 and 100m OM4 limits of standard SR optics. Operations teams standardize matching optics at both endpoints, document link distance by fiber grade, and validate RS-FEC for full-reach 25G service. The aggregation layer gains predictable installed capacity across longer MMF paths.
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| Product Type | Optical Transceiver | Optical Transceiver | Transceiver | Transceiver | Optical Transceiver |
| Form Factor | SFP28 | SFP28 | SFP | QSFP | SFP28 |
| Data Rate | 10 Gbps / 25 Gbps | 25 Gbps | 25G | 25G | 10 Gbps / 25 Gbps |
| Operating Temperature | Commercial (0°C to 70°C) | Commercial (0°C to 70°C) | 0 to 70°C | 0 to 70°C | Commercial (0°C to 70°C) |
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dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Dual-rate CSR module provided stable short-range 10G and 25G connectivity.
Consistent throughput with reliable signal quality.
Seamless integration across mixed-speed environments.
Maintained steady bandwidth in dense deployments.
Strong performance and predictable latency.
Reliable CSR optics for enterprise networks.
Efficient and flexible SFP28 module.
Cisco SFP-10/25G-CSR-S is an S-Class SFP28 optical transceiver for 10/25GBASE-CSR Ethernet links over multimode fiber. It provides dual-rate 10G and 25G operation, uses 850nm optics, terminates on dual LC/PC connectors, and supports longer MMF runs than standard 25G SR optics. It is used in Cisco switch SFP28 ports where Cisco compatibility is required.
The SFP-10/25G-CSR-S model number identifies a Cisco SFP28 transceiver that supports 10G and 25G speeds. CSR refers to Cisco Short Reach extended-reach multimode operation, and S marks the S-Class optics line. The SKU is not a copper DAC or AOC; it is a pluggable optical module designed for duplex multimode fiber with LC patch cords.
SFP-10/25G-CSR-S is an SFP28 optical transceiver. The SFP28 form factor is associated with 25G Ethernet ports while also supporting 10G operation on compatible Cisco platforms. Buyers should not treat it as a basic 1G SFP module. It is selected for 10G to 25G migration paths that keep existing duplex multimode fiber where reach requirements allow.
SFP-10/25G-CSR-S sits in Cisco's 25G SFP28 optics portfolio as a dual-rate MMF option with longer reach than SFP-25G-SR-S. It fits between short multimode models such as SFP-25G-SL or SFP-25G-SR-S and single-mode long-reach options such as SFP-10/25G-LR-S. That placement makes it useful for campus backbone and distribution links using OM3 or OM4 fiber.
SFP-10/25G-CSR-S supports dual-rate 10G and 25G Ethernet operation on compatible Cisco SFP28 ports. Cisco lists it as a 10/25GBASE-CSR SFP28 module for multimode fiber. The dual-rate design helps networks move from 10G links to 25G links while keeping the same optical SKU where host platform support and fiber quality match Cisco guidance.
SFP-10/25G-CSR-S uses 850nm multimode optics. Cisco's specification table lists the transmit and receive wavelength range as 840 to 860nm for both 10G and 25G operation. This wavelength aligns the module with short-reach multimode fiber designs, so it should be matched with suitable OM2, OM3, OM4, or OM5 cabling rather than single-mode G.652 fiber.
SFP-10/25G-CSR-S supports up to 300m over OM3 multimode fiber and up to 400m over OM4 or OM5 multimode fiber, depending on fiber quality. Cisco also lists 82m over OM2 at 10G and up to 70m over OM2 at 25G. Full 25G reach requires the correct FEC mode on the host port.
SFP-10/25G-CSR-S uses a dual LC/PC connector interface for duplex multimode fiber patch cords. Cisco notes that PC or UPC patch cords are supported and APC connectors are not supported. Buyers should match the module with clean, standards-compliant LC multimode cabling and verify polarity across the transmit and receive fiber pair before bringing the link into service.
SFP-10/25G-CSR-S requires RS-FEC on the host port for full-reach 25G operation. Cisco states that BASE-R FEC supports shorter 70m OM3 and 100m OM4 operation, while no FEC supports shorter 30m OM3 and 50m OM4 operation at 25G. FEC is not required for 10G operation according to Cisco's data sheet.
SFP-10/25G-CSR-S has a listed maximum power consumption of 1.2W in Cisco's 25G port cabling specifications. That power level is important when planning dense SFP28 switch deployments because multiple optics share the thermal and power budget of the host platform. Network teams should still follow the Cisco platform data sheet and compatibility matrix for port-level support.
SFP-10/25G-CSR-S is used for 10G or 25G Ethernet links over duplex multimode fiber where distances exceed standard 25G SR reach. Typical roles include access-to-distribution uplinks, distribution-to-core links, and campus backbone upgrades. The module is especially useful when existing OM3 or OM4 cabling already supports 300m or 400m runs and the network is moving toward 25G.
SFP-10/25G-CSR-S fits campus and enterprise environments with longer multimode fiber runs between closets, aggregation switches, or nearby buildings. It is more relevant than short-link optics when cable distance approaches hundreds of meters. For very short rack-to-rack connections, Cisco 25G DAC or AOC options often fit better, while single-mode LR optics fit longer 10km fiber paths.
SFP-10/25G-CSR-S supports 10G to 25G migration planning because it operates at both speeds on compatible Cisco SFP28 ports. Networks that already use OM3 or OM4 duplex fiber for 10G links can evaluate the same cabling for 25G operation. At 25G, full 300m OM3 or 400m OM4 reach requires RS-FEC and suitable fiber quality.
SFP-10/25G-CSR-S is suitable for designs that need a careful balance between reach and FEC behavior. Cisco documents RS-FEC for full 25G reach and shorter operation with BASE-R FEC or no FEC. Network architects can select the FEC mode supported by the host platform and required distance, then validate latency, reach, and interoperability before production use.
SFP-10/25G-CSR-S is supported on Cisco switches with compatible SFP28 ports. Cisco directs buyers to the Transceiver Module Group Compatibility Matrix for exact platform, software, and optics support. Practical compatibility checks should include the switch model, operating system release, port speed, FEC mode, and whether the design uses 10G or 25G operation.
SFP-10/25G-CSR-S belongs to Cisco's 10/25GBASE-CSR SFP28 optics portfolio and supports high-speed connectivity aligned with IEEE 802.3by and IEEE 802.3cc where applicable. Cisco also notes FCoE support for SFP-10/25G-CSR-S with appropriate host software support. Integration planning should still follow Cisco platform compatibility and the target Ethernet speed.
SFP-10/25G-CSR-S is normally deployed as a matched optical pair, with the same or compatible Cisco 10/25G multimode optic at the far end of the duplex fiber link. Both host ports should support the selected speed and FEC mode. The fiber channel, connector type, polarity, and distance must match Cisco guidance before the link is treated as production-ready.
SFP-10/25G-CSR-S has documented interoperability considerations when working with IEEE 10G-SR optics. Cisco notes that the output level of the 25G transmit port can overload some 10G receive ports, so the Cisco optics-to-optics interoperability matrix should be checked before mixed-optic deployment. Matching optics at both ends is usually simpler for operational support.
SFP-10/25G-CSR-S provides dual-rate 10G and 25G operation with up to 300m over OM3 and 400m over OM4, while SFP-25G-SR-S is a 25GBASE-SR SFP28 module for MMF with 70m OM3 and 100m OM4 reach. SFP-25G-SR-S suits shorter 25G links, while SFP-10/25G-CSR-S suits longer multimode upgrade paths.
SFP-10/25G-CSR-S is the better Cisco SFP28 MMF choice when the fiber span is hundreds of meters. SFP-25G-SL is a short-link 25GBASE-SL module for 20m OM3 and 30m OM4 MMF links. Both are multimode SFP28 options, but SFP-10/25G-CSR-S covers longer campus or closet distances and also supports 10G operation.
SFP-10/25G-CSR-S is a multimode 850nm optic for 300m OM3 and 400m OM4 links, while SFP-10/25G-LR-S is a single-mode optic for 10km links over G.652 fiber. Both support 10G and 25G operation. The right choice depends mainly on installed fiber type, required distance, and whether the link is MMF or SMF.
SFP-10/25G-CSR-S is a commercial-temperature multimode CSR optic for 300m OM3 and 400m OM4 distances. SFP-10/25G-LR-I is an industrial-temperature single-mode LR optic for 10km G.652 fiber links. SFP-10/25G-LR-I fits harsher temperature environments and longer SMF paths, while SFP-10/25G-CSR-S fits standard Cisco switch rooms using duplex MMF.
SFP-10/25G-CSR-S pricing depends on condition, quantity, sourcing route, and current market availability. New Cisco optics usually carry different pricing from refurbished or tested surplus units. ORM Systems can quote the SKU for single-unit requirements or larger rollout quantities, helping buyers compare budget, warranty term, lead time, and compatibility requirements before placing an order.
SFP-10/25G-CSR-S can be sourced in new or refurbished condition depending on supplier availability at the time of quotation. Refurbished units should be tested before dispatch because optics are sensitive to connector condition, DOM readings, and link stability. Buyers should confirm condition preference, warranty coverage, required quantity, and delivery location when requesting pricing from ORM Systems.
SFP-10/25G-CSR-S lead time depends on live stock position, required quantity, condition, and destination. Common single-unit requirements may move faster than large staged deployments, but availability changes with Cisco optics demand. ORM Systems can provide a quote with current lead time, shipping route, warranty option, and any available alternatives if a project deadline is fixed.
ORM Systems can quote SFP-10/25G-CSR-S for bulk orders when multiple Cisco switch links, closet upgrades, or campus backbone runs need the same optic. Quantity pricing is especially useful when both ends of each fiber link require matching modules. Buyers should share the number of links, spare-unit requirement, preferred condition, and delivery schedule for accurate volume pricing.
SFP-10/25G-CSR-S appears in Cisco's 25G SFP28 module portfolio and compatibility resources, but lifecycle status should be verified at the point of purchase. Cisco product availability and end-of-sale status can change by region and channel. ORM Systems can help buyers source the SKU, check alternatives, and plan replacements when a project requires continuity across existing Cisco hardware.
ORM Systems can offer warranty coverage for SFP-10/25G-CSR-S depending on condition, source, and quotation terms, with up to a 3-year warranty available on eligible tested hardware. Warranty review is important for optics because link faults can come from fiber cleanliness, connector damage, host port compatibility, or module failure. The quoted terms should be checked before purchase.
Refurbished SFP-10/25G-CSR-S modules should be tested before dispatch for physical condition, optical link behavior, connector integrity, and DOM reporting where supported by the host platform. Testing helps reduce deployment risk when modules are installed into Cisco SFP28 ports. Buyers should request confirmation of testing scope, warranty period, and replacement process when ordering refurbished optics.
SFP-10/25G-CSR-S is part of Cisco's SFP28 module portfolio and Cisco lists high-speed connectivity compliance with IEEE 802.3by and IEEE 802.3cc where applicable. Cisco also identifies Class 1 laser requirements in the optical specification notes. Buyers should use genuine or properly tested compatible optics and confirm platform support through Cisco's compatibility matrix before deployment.
SFP-10/25G-CSR-S installs into a compatible Cisco SFP28 switch port and connects to duplex multimode fiber through dual LC/PC patch cords. The port should be configured for the intended 10G or 25G speed, with RS-FEC enabled for full-reach 25G operation. Fiber ends should be inspected and cleaned before insertion to avoid avoidable optical loss.
SFP-10/25G-CSR-S does not require a licence as an optical transceiver, but the host Cisco platform must support the optic, port speed, operating system release, and FEC configuration. Cisco also notes FCoE support with appropriate host software support. Network teams should check platform licensing separately if a switch feature, not the optic, controls the required service.
SFP-10/25G-CSR-S requires compatible Cisco SFP28 ports, duplex multimode fiber, LC/PC or LC/UPC patch cords, and a matching optic at the far end. OM3, OM4, or OM5 cabling is preferred for longer reach, with OM2 limited to shorter distances. Cleaning tools, inspection scope access, and the correct FEC configuration help bring the link up cleanly.
Buyers in the UK can purchase SFP-10/25G-CSR-S through ORM Systems by requesting a quote for the required quantity, condition, warranty, and delivery location. ORM Systems supports B2B procurement for Cisco enterprise networking hardware, including transceivers for upgrade projects, spares, and matched-link deployments. Sharing the host switch model helps confirm compatibility before ordering.
ORM Systems can support international shipping for SFP-10/25G-CSR-S depending on destination, stock source, order value, and export requirements. International buyers should confirm delivery country, preferred courier terms, tax or import handling, and any deadline before ordering. For multi-site projects, ORM Systems can quote staged delivery so each location receives the correct optics and spare units.