Genuine Cisco QSFP-40G-CSR4 40GBASE-CSR4 QSFP+ Optical Transceiver Module 850nm 400m MPO MMF 10-2837-02 The Cisco QSFP-40G-CSR4 is a high-performance, hot-swappable 40GBASE-CSR4 QSFP+ (Quad Small Form-Factor Pluggable Plus) optical transceiver module designed for high-density, extended-reach connections in data centers, high-performance computing (HPC) networks, enterprise core layers, and service provider applications. As an enhanced version of the standard SR4 module, the QSFP-40G-CSR4 integrates 4 independent transmit and receive channels operating at 850nm. It extends the reach of multimode parallel fiber up to 300 meters on laser-optimized OM3 MMF and up to 400 meters on OM4 MMF. It supports native 40G optical links over 12-fiber ribbon cables with MPO/MTP connectors, or can be used in 4x10G breakout mode via a ribbon-to-duplex fiber breakout cable to interface with four 10GBASE-SR optics, delivering unparalleled flexibility and cost savings.
Model / Product Code
QSFP-40G-CSR4
Connector
MPO-12 / MTP-12
Max Cable Distance
300m over OM3 / 400m over OM4
DOM (Digital Monitoring)
Supported
Operating Temperature
0°C ~ 70°C
Typical Applications
- Data Center Spine-Leaf 40G Extended-Reach Links
- 40G → 4×10G Breakout Connections
- Enterprise Campus Network 40G Aggregation Connections
- Cisco QSFP+ Port Switch/Router 40G Uplink Ports
- High-Speed Server and Storage Network Interface
Product Highlights
Extended-Reach 40G Performance
- Engineered specifically for medium-range data center interconnects. It breaks the restrictive distance limits of standard SR4 optics, delivering an extended transmission range of up to 400 meters on OM3 MMF and up to 500 meters on OM4 MMF—perfectly bridging the gap for cross-rack, cross-floor, and inter-building backbone connections.
Flexible 40G/4×10G Operation & Breakout Support
- Offers exceptional network deployment flexibility by supporting both native, aggregated 40Gbps high-speed links and 4×10G breakout configurations. Via an MPO-12 to 4×LC breakout cable, a single 40G port can be seamlessly split into four independent 10G links, maximizing port density and protecting legacy 10G hardware investments.
Cost-Effective Infrastructure Connectivity
- Enables enterprises to leverage widely available, budget-friendly multi-mode fiber (MMF) infrastructure. It eliminates the absolute necessity of transitioning to expensive single-mode cabling (SMF) and pricier single-mode transceivers for extended-reach applications, significantly lowering CAPEX.
Standard MPO-12 Interface for Simplified Deployment
- Adopts the universal MPO-12 (MTP) interface, ensuring 100% compatibility with mainstream parallel fiber optic cables and patch panels. Whether configuring point-to-point 40G trunks or structured breakout networking, this standardized design simplifies on-site installation and shortens deployment timelines.
Enterprise-Grade Cisco Reliability & Real-Time DOM
- 100% authentic Cisco quality (P/N: 10-2837-02) ensuring zero software compatibility errors or packet drops on Cisco Nexus and Catalyst platforms. Integrated with Digital Optical Monitoring (DOM), it allows network administrators to proactively track operational metrics like Tx/Rx power, laser bias, and temperature to ensure maximum network uptime.