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CFP-40G-SR4
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40GBASE-SR4 CFP MODULE WITH MPO CONNECTOR
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Name:
CFP-40G-SR4
- Description:
- 40GBASE-SR4 CFP MODULE WITH MPO CONNECTOR
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 882658337307
- 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:
$3,995.00
- Price:
$842.0078.9% off
Quantity:
1
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CFP-40G-SR4 Overview
CFP-40G-SR4 is a CFP form factor short-range transceiver designed to support 40G Ethernet applications over multi-mode fiber. It utilizes LC connectors and operates at an 850 nm wavelength, ensuring reliable transmission over typical distances of up to 100 m. This module is engineered for data center, enterprise network, and telecom deployments where high-speed, short-range connectivity is required.
CFP-40G-SR4 offers a robust design with an operating temperature range of 0 to 70°C and a power consumption of approximately 6.5W. Its compatibility with major networking brands such as Cisco, Juniper, Huawei, and Arista underscores its suitability for diverse high-performance network environments. The transceiver’s CFP form factor and dedicated performance parameters make it an optimal choice for modern optical interconnect needs.
CFP-40G-SR4 price is $842.00, a 78.9% saving from the Cisco list price of $3,995.00. CFP-40G-SR4 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for CFP-40G-SR4 for additional pricing. Browse the full Cisco 40G Optical Modules series or explore all Cisco products.
CFP-40G-SR4 Specifications
- Product Type
- Transceiver
- Brand
- Cisco
- Form Factor
- CFP
- Data Rate
- 40G
- Connector Type
- LC
- Wavelength
- 850 nm
- Transmission Distance
- Short-Range
- Fiber Type
- Multi-mode
- Max Distance
- 100 m
- Supported Protocols
- Ethernet
- Network Interface
- Fiber
- Power Consumption
- 6.5W
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco, Juniper, Huawei, Arista
- Product Name
- CFP-40G-SR4
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Product Comparison Table 
| CFP-40G-SR4 |  QSFP-40GE-LR4-S |  QSFP-40G-BD-RX |  QSFP-40G-CSR4 | |
|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | CFP | QSFP | QSFP | QSFP |
| Data Rate | 40G | 40G | 40G | 40G |
| Connector Type | LC | LC | LC | LC |
| Wavelength | 850 nm | 1271/1294/1318/1341 nm | 850nm | 850nm |
| Transmission Distance | Short-Range | Long-Range | Short-Range | Short-Range |
| Fiber Type | Multi-mode | Single-mode | Multi-mode | Multi-mode |
| Max Distance | 100 m | 10 km | 100 meters | 100 meters |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet, Fibre Channel |
| Network Interface | Fiber | Ethernet | Fiber | Fiber |
| Operating Temperature | 0 to 70°C | 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 | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V |
| Compatibility | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista | Cisco / Juniper / Huawei / Arista | Cisco |
| Product Name | CFP-40G-SR4 | QSFP-40GE-LR4-S | QSFP-40G-BD-RX | QSFP-40G-CSR4 |
Compliance & Warranty
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
A
Alec Harmon
4
Delivered consistent 40G SR4 performance over MMF. Stable MPO connectivity.
B
Brett Lawson
4
Reliable short-range CFP module for dense deployments.
C
Cody Marshall
4
Maintained steady throughput during peak traffic.
D
Derek Palmer
4
Excellent optical clarity and predictable latency.
E
Evan Shepherd
5
Strong compatibility with our 40G backbone.
F
Felix Donovan
4
Dependable SR4 optics for high-bandwidth links.
G
Grant Morrison
4
Solid 40G solution with stable performance.
Questions & Answers
What is the CFP-40G-SR4 module?
The CFP-40G-SR4 is a 40GBASE-SR4 pluggable optics module with an MPO connector designed for high-speed multimode fiber Ethernet links up to 100 meters.
Which fiber type does the CFP-40G-SR4 support?
The CFP-40G-SR4 supports OM3 and OM4 multimode fiber, delivering reliable 40 Gbps connectivity over short-reach links.
What is the maximum reach of the CFP-40G-SR4 module?
The CFP-40G-SR4 achieves up to 100 meters on OM4 multimode fiber and up to 70 meters on OM3 multimode fiber at 40 Gbps.
What wavelength does the CFP-40G-SR4 operate at?
The CFP-40G-SR4 module uses a 840 nm VCSEL light source optimized for short-range multimode fiber transmission.
What connector type is used on the CFP-40G-SR4?
The CFP-40G-SR4 features a female MPO (Multifiber Push-On) connector for parallel multimode fiber connectivity.
Which switches and routers are compatible with the CFP-40G-SR4?
The CFP-40G-SR4 is compatible with standard CFP ports on Cisco, Juniper, Arista, and other vendor switches and routers supporting 40GBASE-SR4.
How much power does the CFP-40G-SR4 consume?
The CFP-40G-SR4 has a typical power consumption of 4.5 W, ensuring efficient operation within data center power budgets.
Is the CFP-40G-SR4 MSA compliant?
Yes, the CFP-40G-SR4 complies with the CFP Multi-Source Agreement (MSA) and IEEE 802.3ba 40GBASE-SR4 standards.
What are the operating temperature ranges for the CFP-40G-SR4?
The CFP-40G-SR4 operates from 0 °C to 70 °C (commercial) and from –40 °C to 85 °C (extended) depending on the variant.
How do I install the CFP-40G-SR4?
To install, power down the CFP slot, slide the module straight into the CFP port until it latches, connect the MPO fiber cable, and power up the device.
How do I clean the MPO connector on the CFP-40G-SR4?
Use a fiber connector cleaner or lint-free wipes with isopropyl alcohol to gently clean the MPO ferrule end face before mating.
What data rates does the CFP-40G-SR4 support?
The CFP-40G-SR4 supports a fixed data rate of 40 Gbps as defined by the 40GBASE-SR4 Ethernet standard.
Can the CFP-40G-SR4 module be field-upgraded?
No, the CFP-40G-SR4 is a fixed-rate short-reach module and does not support firmware or field-upgradeable features.
What is the difference between 40GBASE-SR4 and 40GBASE-LR4?
40GBASE-SR4 uses multimode fiber for short reaches (up to 100 m), while 40GBASE-LR4 uses single-mode fiber for long reaches (up to 10 km).
How many fibers are required for 40GBASE-SR4?
40GBASE-SR4 uses 12-fiber MPO cabling, with four transmit and four receive lanes each operating at 10 Gbps.
What monitoring and diagnostic features are available on the CFP-40G-SR4?
The CFP-40G-SR4 supports Digital Optical Monitoring (DOM) for real-time status of optical power, voltage, temperature, and transmitter bias.