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QSFP-40G-SR4
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40GBASE-SR4 QSFP TRANSCEIVER MODULE WITH MPO CONNECTOR
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Name:
QSFP-40G-SR4
- Description:
- 40GBASE-SR4 QSFP TRANSCEIVER MODULE WITH MPO CONNECTOR
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 662147352260
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
- Warranty:
- 3
- List Price:
$3,534.00
- Price:
$167.0095.3% off
Quantity:
1
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QSFP-40G-SR4 Overview
The QSFP-40G-SR4 is a high-performance Cisco QSFP+ transceiver designed to deliver reliable 40-Gigabit Ethernet connectivity over short-range multimode fiber. This Cisco QSFP-40G-SR4 module supports 40GBASE-SR4 applications, enabling seamless deployment across enterprise networks, data center fabrics, and high-density cloud environments. With strong optical performance, it supports transmission distances up to 100 meters on OM3 fiber and 150 meters on OM4 fiber, making it ideal for short-range, high-bandwidth 40G aggregation and uplink connections.
Engineered for consistent signal integrity and broad compatibility across Cisco platforms, the QSFP 40G SR4= module provides low-latency data transmission, high throughput, and simple plug-and-play installation. Its hot-swappable design enables rapid installation or replacement without downtime, offering an efficient and cost-effective solution for organizations scaling their high-performance 40-Gigabit multimode fiber infrastructure.
Capabilities
Short-Range 40G Fiber Connectivity
Supports up to 100m on OM3 and 150m on OM4 multimode fiber.
40GBASE-SR4 Performance
Optimized for high-bandwidth 40-Gigabit Ethernet links in enterprise and data center networks.
Hot-Swappable Design
Allows modules to be installed or replaced without service interruption.
Low-Latency Optical Transmission
Delivers stable, high-throughput connectivity for demanding workloads.
Multimode Fiber Support
Offers flexible deployment across diverse multimode cabling infrastructures.
Supported Hardware Models
The QSFP-40G-SR4 module is compatible with major Cisco switching platforms, including:
- Cisco Catalyst 4500X Series
- Cisco Catalyst 6800 Series
- Cisco Nexus 3000 Series
- Cisco Nexus 5000 Series
- Cisco Nexus 7000 Series
- Cisco Nexus 9000 Series
This wide compatibility ensures seamless integration across enterprise, cloud, and high-density data center environments.
Why Choose the QSFP-40G-SR4
- Ideal for short-range 40G multimode fiber connectivity
- Compatible with Cisco Catalyst and Cisco Nexus platforms
- Delivers stable, high-performance 40G optical transmission
- Supports plug-and-play deployment for simplified scaling
- A cost-efficient solution for expanding 40G data center capacity
QSFP-40G-SR4 price is $167.00, a 95.3% saving from the Cisco list price of $3,534.00. QSFP-40G-SR4 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QSFP-40G-SR4 for additional pricing. Browse the full 40G Base Modules series or explore all Cisco products.
QSFP-40G-SR4 Specifications
- Product Type
- Transceiver
- Brand
- Cisco
- Form Factor
- QSFP
- Data Rate
- 40G
- Connector Type
- MPO
- Wavelength
- 850nm
- Transmission Distance
- Short-Range
- Fiber Type
- Multi-mode
- Max Distance
- 100 meters (OM3) / 150 meters (OM4)
- Supported Protocols
- Ethernet
- Network Interface
- Fiber
- Power Consumption
- ≤ 4W
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco, Juniper, Huawei, Arista
- Product Name
- QSFP-40G-SR4
QSFP-40G-SR4 Use Case
Hyperscale Data Center Spine-Leaf 40G Connectivity
In hyperscale data centers, the QSFP-40G-SR4-40GBASE-SR4 QSFP Transceiver Module with MPO Connector delivers 40Gbps multi-mode fiber links up to 100 m between spine and leaf switches. This deployment reduces cabling complexity and oversubscription ratios, enabling real-time east-west traffic. Key Benefits: - Scalable, uniform MPO fiber management - Ultra-low latency (<2 µs) for high-throughput applications - Hot-pluggable 40GBASE-SR4 upgrade path
High-Performance Computing Cluster Interconnect
In HPC environments, the QSFP-40G-SR4-40GBASE-SR4 QSFP Transceiver Module with MPO Connector establishes low-latency, high-bandwidth links between compute nodes over multi-mode fiber. This configuration maximizes MPI performance for large-scale simulations and AI training jobs. Key Benefits: - Sustained 40Gbps throughput for parallel workloads - Consistent latency and jitter for synchronized processing - Simplified rack-to-rack cabling with MPO trunks
Enterprise Campus Backbone Upgrade to 40G
Enterprises migrating from 10G to 40G campus backbones deploy the QSFP-40G-SR4-40GBASE-SR4 QSFP Transceiver Module with MPO Connector to quadruple capacity over existing multi-mode fiber. The plug-and-play design cuts deployment time and operational costs. Key Benefits: - 4× bandwidth increase without fiber re-pull - Consistent MPO connector standardization - Future-proof architecture for 5G, IoT, and SD-WAN services
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Product Comparison Table 
| QSFP-40G-SR4 |  QSFP-H40G-AOC3M |  QSFP-4X10G-AOC1M | |
|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver |
| Form Factor | QSFP | QSFP | QSFP |
| Data Rate | 40G | 40G | 40G |
| Wavelength | 850nm | 850 nm | 850nm |
| Transmission Distance | Short-Range | Short-Range | Short-Range |
| Fiber Type | Multi-mode | Multi-mode | Multi-mode |
| Max Distance | 100 meters (OM3) / 150 meters (OM4) | 3 m | 1 meter |
| Supported Protocols | Ethernet | Ethernet | Ethernet |
| Network Interface | Fiber | Ethernet | Ethernet |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V |
| Product Name | QSFP-40G-SR4 | QSFP-H40G-AOC3M | QSFP-4X10G-AOC1M |
Compliance & Coverage
100% Genuine Product Guarantee
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
T
Trevor Simmons
5
Reliable 40G performance over multimode fiber.
K
Kevin Patel
5
Stable optics for data center aggregation.
B
Brian Wilson
5
Easy installation with consistent throughput.
J
Jason Reed
5
Works well with MPO cabling.
M
Mark Johnson
5
Dependable choice for 40G links.
Questions & Answers
What is the QSFP-40G-SR4?
The QSFP-40G-SR4 is a 40GBASE-SR4 quad small form-factor pluggable transceiver module with an MPO connector for short-range multimode fiber applications.
Which fiber type does QSFP-40G-SR4 require?
It requires OM3 or OM4 multimode fiber terminated with an MPO connector to support 40 Gbps transmission.
What is the maximum reach of QSFP-40G-SR4?
It supports up to 100 meters over OM3 and up to 150 meters over OM4 multimode fiber.
What wavelength does the module operate at?
It operates at a typical wavelength of 850 nm for 40GBASE-SR4 optical transmission.
Is QSFP-40G-SR4 hot-swappable?
Yes, it is fully hot-pluggable for seamless insertion and removal without powering down the system.
Does it support digital diagnostics (DOM)?
Yes, it features Digital Optical Monitoring (DOM) for real-time optical performance measurement.
Which industry standards does QSFP-40G-SR4 comply with?
It complies with the QSFP MSA and IEEE 802.3ba 40GBASE-SR4 standards.
Which devices is QSFP-40G-SR4 compatible with?
It is compatible with QSFP ports on switches, routers and servers from all major network equipment vendors.
Can I use it in a 100G network with breakout cables?
Yes, with a 1×4 MPO-to-LC breakout cable it supports four separate 10GBASE-SR links in 100G deployments.
What is the power consumption of QSFP-40G-SR4?
Its typical power consumption is ≤1.5 Watts under standard operating conditions.
What operating temperature range does it support?
It operates reliably from 0 °C to 70 °C (32 °F to 158 °F) in commercial environments.
How do I install the QSFP-40G-SR4?
Align the module with the QSFP port, gently insert until the latch engages, then connect the MPO fiber cable.
How should I clean the MPO connector?
Use a certified fiber-optic cleaning kit with lint-free wipes and isopropyl alcohol to gently clean the MPO ferrule.
What warranty covers QSFP-40G-SR4?
It comes with a one-year limited warranty covering defects in materials and workmanship.
Are third-party replacements available for QSFP-40G-SR4?
Yes, compatible third-party modules are available that meet QSFP MSA and IEEE 802.3ba specifications.