Cisco 40-gigabit Ethernet Transceiver Modules Compatibility Matrix
ITCurry #: 0918N134 | Article #: QSFP-40G-SR4-S=- 
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The Cisco® 40GBASE QSFP (Quad Small Form-Factor Pluggable) portfolio offers customers a wide variety of high-density and low-power 40 Gigabit Ethernet connectivity options for data center, high-performance computing 00networks, enterprise core and distribution layers, and service provider applications.
Cisco QSFP-40G-SR4-S (S-Class)
The S-Class Cisco 40GBASE-SR4-S QSFP module supports link lengths of 100 and 150 meters, respectively, on laser-optimized OM3, and OM4/OM5 multimode fibers. QSFP-40G-SR4-S is aligned to IEEE 40GBASE-SR4 optical specifications which support high-bandwidth 40G optical links over 12-fiber parallel fiber terminated with MPO/MTP multifiber female connectors. Because the QSFP-40G-SR4-S does not support 4x10G breakout connectivity, see QSFP-40G-SR4 or QSFP-40G-CSR4 for such applications. QSFP-40G-SR4-S does not support FCoE.
Cisco QSFP-40G-SR4
The Cisco 40GBASE-SR4 QSFP Modules support link lengths of 100 meters and 150 meters, respectively, on laser-optimized OM3, and OM4/OM5 multimode fibers. It primarily enables high-bandwidth 40G optical links over 12-fiber parallel fiber terminated with MPO/MTP multifiber female connectors. It can also be used in a 4x10G breakout mode for interoperability with 10GBASE-SR and SFP-10/25G-CSR-S (in 10G mode) interfaces up to 100 and 150 meters on OM3, and OM4/OM5 fibers, respectively. The worry-free 4x10G mode operation is enabled by the optimization of the transmit and receive optical characteristics of the Cisco QSFP-40G-SR4 to prevent receiver overload or unnecessary triggering of alarm thresholds on the 10GBASE-SR and SFP-10/25G-CSR-S (in 10G mode) receiver, and at the same time is completely interoperable with all standard 40GBASE-SR4 interfaces.
The 4x10G connectivity is achieved using an external 12-fiber parallel to 2-fiber duplex breakout cable, which connects the 40GBASE-SR4 module to four 10GBASE-SR optical interfaces. Cisco QSFP-40G-SR4 is optimized to guarantee interoperability with any IEEE 40GBASE-SR4 and in 4x10G mode with the 10GBASE-SR and SFP-10/25G-CSR (in10G mode).
Cisco QSFP-40G-SR-BD (40G BiDi)
The Cisco QSFP 40-Gbps BiDirectional (BiDi) transceiver (Figure 1) is a pluggable optical transceiver with a duplex LC connector interface for short-reach data communication and interconnect applications using MultiMode Fiber (MMF). The Cisco QSFP 40-Gbps BiDi transceiver offers customers a compelling solution that enables reuse of their existing 10 gigabit duplex MMF infrastructure for migration to 40 Gigabit Ethernet connectivity.
The Cisco QSFP 40-Gbps BiDi transceiver supports link lengths of 100 and 150 meters on laser-optimized OM3, and OM4/OM5 multimode fibers, respectively.
The Cisco BiDi transceiver complies with the QSFP MSA specification, enabling customers to use it on all QSFP 40-Gbps platforms to achieve high-density 40 Gigabit Ethernet networks.
Each Cisco QSFP 40-Gbps BiDi transceiver consists of two 20-Gbps transmit and receive channels in the 832-918 nanometer wavelength range, enabling an aggregated 40-Gbps link over a two-strand multimode fiber connection.
| Performance | |
| SFP transceiver type | Fiber optic | 
| Maximum data transfer rate | 40000 Mbit/s | 
| Interface type | QSFP | 
| Multi-mode fiber (MMF) supported | Yes | 
| Fiber optic connector | MPO | 
| Fiber cable diameters supported (core/cladding) | 50/125 æm | 
| SFP transceiver standard | SR | 
| Maximum transfer distance | 150 m | 
| Wavelength | 850 nm | 
| Networking standards | IEEE 802.3ba | 
| Cabling technology | 40GBASE-SR4 | 
| Auto MDI/MDI-X | Yes | 
| Export Control Classification Number (ECCN) | EAR99 | 
| Features | |
| Hot-Plug support | Yes | 
| Certificates | |
| Certification | MSA | 
| Operational conditions | |
| Operating temperature (T-T) | 0 - 70 øC | 
| Storage temperature (T-T) | -40 - 85 øC | 
| Operating relative humidity (H-H) | 10 - 80% | 
| Storage relative humidity (H-H) | 10 - 85% | 
| Packaging content | |
| Quantity per pack | 1 pc(s) | 
| Logistics data | |
| Harmonized System (HS) code | 85369010 | 
| Warranty | |
| Base Warranty | Non Non |