United States$5,000,000+
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Claudia Benson
5
Reliable LR4 Lite for 40G Ethernet. Stable and consistent performance.
WSP-Q40GLR4L
QSFP 40G Ethernet - LR4 Lite, LC, 2KM
FEATURED DEAL
Name:
WSP-Q40GLR4L
- Description:
- QSFP 40G Ethernet - LR4 Lite, LC, 2KM
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 662680665407
- Condition:
- Warranty:
- 3
- List Price:
$7,073.00
- Price:
$3,357.0052.5% off
Quantity:
1
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WSP-Q40GLR4L Overview
WSP-Q40GLR4L is a QSFP+ transceiver designed for high-speed Ethernet communications, delivering a 40G data rate via LC connectors. It supports long-range transmission over single-mode fiber, making it ideal for data centers, enterprise networks, and telecom applications.
WSP-Q40GLR4L features a compact QSFP+ form factor and standardized physical dimensions optimized for high-density deployments. Officially documented for reliable performance, it is compatible with major networking vendors and supports critical protocols to meet the rigorous demands of modern network infrastructures.
WSP-Q40GLR4L price is $3,357.00, a 52.5% saving from the Cisco list price of $7,073.00. WSP-Q40GLR4L is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WSP-Q40GLR4L for additional pricing. Browse the full 40G Base Modules series or explore all Cisco products.
WSP-Q40GLR4L Specifications
- Product Type
- Transceiver
- Form Factor
- QSFP+
- Data Rate
- 40G
- Connector Type
- LC
- Wavelength
- 1271/1291/1311/1331 nm
- Transmission Distance
- Long-Range
- Fiber Type
- Single-mode
- Max Distance
- 10 km
- Supported Protocols
- Ethernet
- Network Interface
- Fiber
- Power Consumption
- 4.8W
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco / Juniper / Huawei / Arista
- Product Name
- WSP-Q40GLR4L
- Height
- 0.54 inches
- Width
- 0.54 inches
- Depth
- 1.8 inches
- Weight
- 0.2 lbs
WSP-Q40GLR4L Use Case
Data Center Campus Spine-Leaf Connectivity with 40G LR4 Lite
In a multi-hall data center campus, deploying WSP-Q40GLR4L-QSFP LR4 Lite modules on spine and leaf switches enables seamless 40G Ethernet links over existing single-mode fiber up to 2 km. This solution delivers high-bandwidth, low-latency interconnects, simplifies network architecture, and ensures scalable performance for virtualization, storage, and cloud services.
5G RAN Backhaul Link for Centralized and Distributed Units
Mobile operators use WSP-Q40GLR4L-QSFP 40G LR4 Lite transceivers to bridge Centralized Units (CU) and Distributed Units (DU) in 5G RAN over 2 km fiber runs. The module ensures reliable, low-jitter 40G Ethernet backhaul, supports massive mobile broadband aggregation, and meets strict latency SLAs for enhanced user experience.
High-Performance Computing Cluster Interconnect
Research institutions and enterprises connect GPU/CPU compute nodes to parallel storage arrays using WSP-Q40GLR4L-QSFP LR4 Lite over 2 km SMF links. This high-throughput 40G Ethernet solution accelerates large dataset transfers for AI/ML workloads, maximizes cluster utilization, and reduces time-to-insight in data-intensive applications.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 WSP-Q40GLR4L |  QSFP-4SFP10G-CU4M= |  QSFP-4X10G-AOC1M= |  QSFP-4X10G-AOC10M= |  QSFP-H40G-AOC2M | |
|---|---|---|---|---|---|
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | N/A | Cisco / Juniper / Huawei / Arista |
| Connector Type | LC | QSFP+ and SFP+ | Integrated Fiber-Optic | Direct Attach | QSFP Direct Attach |
| Data Rate | 40G | 10G | 40G (4x10G) | 40G (4x10G) | 40G |
| Depth | 1.8 inches | N/A | N/A | N/A | N/A |
| Fiber Type | Single-mode | N/A | Multi-mode | N/A | Multi-mode |
| Form Factor | QSFP+ | QSFP+ to 4x SFP+ | QSFP | QSFP | QSFP |
| Height | 0.54 inches | N/A | N/A | N/A | N/A |
| Input Voltage | 3.3V | N/A | 3.3V | N/A | 3.3V |
| Max Distance | 10 km | 4 meters | 1 m | 10 meters | 2 meters |
| Network Interface | Fiber | Copper | Fiber | Ethernet | Ethernet |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 4.8W | N/A | 2.5W | N/A | N/A |
| Product Name | WSP-Q40GLR4L | QSFP-4SFP10G-CU4M= | QSFP-4X10G-AOC1M= | QSFP-4X10G-AOC10M= | QSFP-H40G-AOC2M |
| Product Type | Transceiver | Direct Attach Copper Cable (DAC) | Transceiver | Transceiver | Transceiver |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Transmission Distance | Long-Range | Short-Range | Short-Range | Short-Range | Short-Range |
| Wavelength | 1271/1291/1311/1331 nm | N/A | 850nm | N/A | 850nm |
| Weight | 0.2 lbs | N/A | N/A | N/A | N/A |
| Width | 0.54 inches | N/A | N/A | N/A | N/A |
Reviews & Ratings
J
Julian Hayes
4
Durable build with professional-grade reliability.
N
Naomi Foster
5
Ideal for long-range campus and data center connections.
E
Ezekiel Ward
3
Minimal latency and stable operation under load.
F
Fiona Pierce
4
Excellent performance for extended-range optical deployments.
Questions & Answers
What is the WSP-Q40GLR4L QSFP 40G Ethernet transceiver?
The WSP-Q40GLR4L is a QSFP+ 40 Gigabit Ethernet LR4 Lite transceiver module with LC duplex connectors, designed for long‐reach single‐mode fiber links up to 2 km.
Which connector and fiber type does the WSP-Q40GLR4L use?
The module uses LC duplex connectors and operates over single-mode fiber (SMF) for reliable 40 Gbps transmission.
What maximum link distance does the QSFP 40G LR4 Lite support?
The WSP-Q40GLR4L supports single-mode fiber links up to 2 km at 40 Gbps data rate.
What are the optical wavelengths supported by this LR4 Lite transceiver?
It transmits on four CWDM wavelengths around 1271 nm, 1291 nm, 1311 nm, and 1331 nm, each carrying 10 Gbps.