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QSFP-40G-ER4-C
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40GBASE-ER4 QSFP+ SMF Module Cisco Compatible
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Name:
QSFP-40G-ER4-C
- Description:
- 40GBASE-ER4 QSFP+ SMF Module Cisco Compatible
- Rating:
Added to cart 28 times recently
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2 In stock - Ready to Ship
- Brand:
- Orm
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
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QSFP-40G-ER4-C Overview
QSFP-40G-ER4-C is a QSFP transceiver designed to deliver a 40G Ethernet data rate, featuring an LC connector and engineered for extended-range transmission over single-mode fiber. It is specifically built to meet the demanding requirements of data centers, telecom environments, and enterprise networks, ensuring high-performance connectivity over distances up to 40 km.
QSFP-40G-ER4-C’s compact QSFP form factor makes it ideal for high-density networking applications, with physical dimensions optimized for modern equipment chassis. It supports Ethernet protocols and leverages precise optical engineering—with wavelengths centered around 1310 nm—to provide a reliable and efficient solution for next-generation network interconnects.
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QSFP-40G-ER4-C Specifications
- Product Type
- Transceiver
- Brand
- Orm
- Form Factor
- QSFP
- Data Rate
- 40G
- Connector Type
- LC
- Wavelength
- 1310 nm
- Transmission Distance
- Extended-Range
- Fiber Type
- Single-mode
- Max Distance
- 40 km
- Supported Protocols
- Ethernet
- Network Interface
- Fiber
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Compatibility
- Cisco
- Product Name
- QSFP-40G-ER4-C
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Product Comparison Table 
| QSFP-40G-ER4-C |  QSFP-40G-SR-BD-C |  QSFP-4X10G-LRL-S-C |  QSFP-40G-SR4-C |  FET-40G-C | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | QSFP | QSFP | QSFP | QSFP | QSFP+ |
| Data Rate | 40G | 40G | 4x10G (40G) | 40G | 40G |
| Connector Type | LC | LC | LC | MPO | LC |
| Wavelength | 1310 nm | 850 nm | 1310 nm | 850nm | 1310 nm |
| Transmission Distance | Extended-Range | Short-Range | Long-Range | Short-Range | Long-Range |
| Fiber Type | Single-mode | Multi-mode | Single-mode | Multi-mode | Single-mode |
| Max Distance | 40 km | 100 m | 10 km | 100m (OM3)/150m (OM4) | 10 km |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet, Fibre Channel |
| Network Interface | Fiber | Fiber | Ethernet | Ethernet | Fiber |
| Operating Temperature | 0 to 70°C | 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 | -40 to 85°C |
| Product Name | QSFP-40G-ER4-C | QSFP-40G-SR-BD-C | QSFP-4X10G-LRL-S-C | QSFP-40G-SR4-C | FET-40G-C |
Compliance & Warranty
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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
Y
Yara Holt
4
Phenomenal 40KM reach. This ER4 module is stable and robust, offering a massive power budget for our longest 40G fiber links. Seamless Cisco integration.
Z
Zane Whittaker
4
Exceptional ER4 signal integrity. This module is a dependable choice for our long-range transport network. Consistent performance with zero maintenance required since deployment.
A
Adeline Reed
4
Reliable and high-performing ER4 optic. It delivers professional-grade stability over extreme distances. Full hardware compatibility and high throughput ensured for our network backbone.
B
Barnaby Finch
5
Outstanding 40KM reach for 40G links. The signal clarity is amazing even at maximum distance. A solid, cost-effective solution for regional connectivity expansion.
C
Cecilia Thorne
4
Professional 40G ER4 transceiver for our long spans. Recognized immediately by our Cisco core switches. Rock-solid performance under heavy load. Truly impressive hardware.
Questions & Answers
What is the QSFP-40G-ER4-C 40GBASE-ER4 QSFP+ SMF Module?
The QSFP-40G-ER4-C is a Cisco-compatible 40GBASE-ER4 QSFP+ transceiver designed for long-reach single-mode fiber (SMF) links up to 40 km.
Is the QSFP-40G-ER4-C module fully compatible with Cisco switches?
Yes, the QSFP-40G-ER4-C is 100% Cisco-compatible, supporting full interoperability with Cisco Nexus, Catalyst, and UCS platforms.
What is the maximum transmission distance of the QSFP-40G-ER4-C?
This module supports up to 40 km link budget over single-mode fiber with standard SMF and compliant optical budgets.
Which fiber type does the QSFP-40G-ER4-C support?
The QSFP-40G-ER4-C is optimized for single-mode fiber (SMF) only and is not qualified for multimode fiber (MMF).
What wavelengths are used by this 40GBASE-ER4 QSFP+ module?
It employs four wavelengths around 1310 nm (nominal 1295.56, 1300.05, 1304.58, 1309.14 nm) for parallel 10G lanes.
Does the QSFP-40G-ER4-C support Digital Diagnostics Monitoring (DDM)?
Yes, the module includes IEEE 802.3ae-compliant DDM for real-time monitoring of optical power, temperature, voltage, and bias current.
How much power does the QSFP-40G-ER4-C consume?
Typical power consumption is ≤3.5 W, ensuring energy efficiency in high-density 40G deployments.
What temperature range does the QSFP-40G-ER4-C operate in?
The module operates from 0°C to 70°C (commercial) with an extended option of –40°C to 85°C for harsh environments.
Can I hot-swap the QSFP-40G-ER4-C in a live network?
Yes, the QSFP+ form factor supports hot-plug functionality for seamless installation and removal under power.
What data rate does the QSFP-40G-ER4-C support?
It supports a data rate of 40.0 Gbps aggregated across four 10 Gbps lanes in compliance with IEEE 802.3ba.
How do I install the QSFP-40G-ER4-C module?
Align the module with the QSFP+ port, push until it clicks, and verify link LED status for successful installation.
Can the QSFP-40G-ER4-C interoperate with other vendors’ equipment?
Yes, it meets Multi-Source Agreement (MSA) standards for broad interoperability across MSA-compliant 40G ports.
Is the QSFP-40G-ER4-C RoHS compliant?
Yes, the module is fully compliant with RoHS Directive 2011/65/EU for hazardous substance restriction.
What are the typical applications for the QSFP-40G-ER4-C?
Common use cases include data center interconnects, metro networks, and high-speed backbone links up to 40 km.
Does the QSFP-40G-ER4-C support CWDM MUX/DEMUX?
Yes, it can be used with standard CWDM multiplexers and demultiplexers for cost-effective wavelength management.
What warranty is offered on the QSFP-40G-ER4-C module?
The module includes a one-year limited warranty with optional extensions for complete peace of mind.