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QSFP-40GE-LR4
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QSFP 40GBASE-LR4 Transceiver Module, LC, 10KM
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Name:
QSFP-40GE-LR4
- Description:
- QSFP 40GBASE-LR4 Transceiver Module, LC, 10KM
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 0849064081019
- 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:
$13,995.00
- Price:
$3,309.0076.4% off
Quantity:
1
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QSFP-40GE-LR4 Overview
QSFP-40GE-LR4 is a QSFP+ transceiver engineered for 40G Ethernet applications. It supports a 40G data rate using LC connectors and is intended for long-range transmission over single-mode fiber, reaching distances up to 10 km. This module meets rigorous standards and supports Ethernet protocols, making it an ideal choice for data centers, enterprise networks, and telecom environments.
Designed with a reliable QSFP+ form factor, QSFP-40GE-LR4 offers industry-standard physical dimensions suitable for high-density network applications. Its robust design and compatibility with leading networking equipment from vendors such as Cisco, Juniper, Huawei, and Arista ensure that it delivers efficient performance in demanding long-range deployments.
QSFP-40GE-LR4 price is $3,309.00, a 76.4% saving from the Cisco list price of $13,995.00. QSFP-40GE-LR4 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QSFP-40GE-LR4 for additional pricing. Browse the full Cisco 40G Optical Modules series or explore all Cisco products.
QSFP-40GE-LR4 Specifications
- Product Type
- Transceiver
- Brand
- Cisco
- Form Factor
- QSFP+
- Data Rate
- 40G
- Connector Type
- LC
- Wavelength
- 1310 nm
- Transmission Distance
- Long-Range
- Fiber Type
- Single-mode
- Max Distance
- 10 km
- Supported Protocols
- Ethernet
- Network Interface
- Fiber
- Power Consumption
- 6.0 W
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco / Juniper / Huawei / Arista
- Product Name
- QSFP-40GE-LR4
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Product Comparison Table 
| QSFP-40GE-LR4 |  CFP-40G-SR4 |  QSFP-40G-SR-BD |  CFP-40G-FR | |
|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Optical Transceiver | Transceiver |
| Form Factor | QSFP+ | CFP | QSFP+ | CFP |
| Data Rate | 40G | 40G | 40 Gbps | 40G |
| Connector Type | LC | LC | LC Duplex | LC |
| Fiber Type | Single-mode | Multi-mode | Multi-Mode (MMF) | Single-mode |
| Power Consumption | 6.0 W | 6.5W | 3.5 W | 6.0W |
| Operating Temperature | 0 to 70°C | 0 to 70°C | Commercial (+10°C to 70°C) | 0 to 70°C |
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
O
Oliver Rathbone
4
Delivered steady 40G throughput over single mode fiber. Reliable option for enterprise backbone expansion.
P
Parker Winfield
5
Installed easily and maintained consistent link performance across 10km.
Q
Quentin Mallory
4
Strong optical output and dependable signal integrity.
R
Reid Ashbourne
5
Reliable QSFP+ LR4 module with predictable latency and stability.
S
Spencer Norwood
5
Excellent compatibility with our core switches. Zero packet drops.
T
Travis Eldridge
5
Consistent long-range performance for mission critical links.
W
Warren Blythe
4
High quality optics providing stable 40G connectivity.
Questions & Answers
What is the QSFP-40GE-LR4 transceiver module?
The QSFP-40GE-LR4 is a 40GBASE-LR4 quad-lane, hot-pluggable transceiver module supporting 40Gbps links over single-mode fiber up to 10km.
Which fiber type and connector does the QSFP-40GE-LR4 use?
It uses single-mode fiber (SMF) with LC duplex connectors for reliable 40G transmission.
What is the maximum transmission distance of this module?
The QSFP-40GE-LR4 supports optical links up to 10 kilometers over single-mode fiber.
What wavelengths does the 40GBASE-LR4 module operate on?
It employs four CWDM wavelengths centered at 1271nm, 1291nm, 1311nm, and 1331nm for 40G transmission.
What data rate does the QSFP-40GE-LR4 support?
It provides an aggregated data rate of 40Gbps via four independent 10Gbps lanes.
Is the QSFP-40GE-LR4 module hot-swappable?
Yes, the module is hot-pluggable and can be inserted or removed without powering down the host device.
Which network devices are compatible with the QSFP-40GE-LR4?
It is compatible with any QSFP+ 40GBASE-LR4-capable switch or router from major vendors such as Cisco, Juniper, and Arista.
Does the QSFP-40GE-LR4 support digital diagnostics monitoring (DDM)?
Yes, it is SFF-8472 compliant and offers real-time DDM for optical power, temperature, voltage, and bias current.
What is the operating temperature range for this transceiver?
The standard operating temperature range is 0°C to 70°C (32°F to 158°F).
What is the power consumption of the QSFP-40GE-LR4?
Typical power consumption is under 3.5W, meeting IEEE 802.3ba power budgets.
What form factor and standards compliance does this module have?
It uses the QSFP+ form factor and complies with IEEE 802.3ba 40GBASE-LR4, MSA, and RoHS standards.
How do I install the QSFP-40GE-LR4 transceiver module?
Align the module with the QSFP+ port, insert until the latch engages, then verify link status on your host device.
What is the difference between 40GBASE-LR4 and 40GBASE-SR4?
LR4 uses CWDM over single-mode fiber for up to 10km, while SR4 uses parallel multimode fiber for shorter distances up to 150m.
Does this module support forward error correction (FEC)?
Yes, it supports Reed-Solomon FEC for improved link performance and error resilience.
What warranty and support are provided with the QSFP-40GE-LR4?
It includes a one-year limited warranty and lifetime technical support from the manufacturer.