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QSFP-40GE-LR4
QSFP 40GBASE-LR4 Transceiver Module, LC, 10KM
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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.
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 QSFP-40GE-LR4 |  CFP-40G-SR4= |  QSFP-40G-CSR4= |  QSFP-40G-SR-BD= |  CFP-40G-FR= | |
|---|---|---|---|---|---|
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista | Cisco | Cisco / Juniper / Huawei / Arista | Cisco, Juniper, Huawei, Arista |
| Connector Type | LC | LC | LC | LC | LC |
| Data Rate | 40G | 40G | 40G | 40G | 40G |
| Depth | N/A | N/A | N/A | N/A | 7.5 inches |
| Fiber Type | Single-mode | Multi-mode | Multi-mode | Multi-mode | Single-mode |
| Form Factor | QSFP+ | CFP | QSFP | QSFP | CFP |
| Height | N/A | N/A | N/A | N/A | 1.2 inches |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Max Distance | 10 km | 100 m | 100 m | 150 meters | 10 km |
| 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 |
| Power Consumption | 6.0 W | 6.5W | N/A | 3.8W | 6.0W |
| Product Name | QSFP-40GE-LR4 | CFP-40G-SR4= | QSFP-40G-CSR4= | QSFP-40G-SR-BD= | CFP-40G-FR= |
| Product Type | Transceiver | Transceiver | 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, Fibre Channel |
| Transmission Distance | Long-Range | Short-Range | Short-Range | Short-Range | Long-Range |
| Wavelength | 1310 nm | 850 nm | 850 nm | 850nm | 1310nm |
| Weight | N/A | N/A | N/A | N/A | 1.5 lbs |
| Width | N/A | N/A | N/A | N/A | 4.4 inches |
Delivered steady 40G throughput over single mode fiber. Reliable option for enterprise backbone expansion.
Installed easily and maintained consistent link performance across 10km.
Strong optical output and dependable signal integrity.
Reliable QSFP+ LR4 module with predictable latency and stability.
Excellent compatibility with our core switches. Zero packet drops.
Consistent long-range performance for mission critical links.
High quality optics providing stable 40G connectivity.
The QSFP-40GE-LR4 is a 40GBASE-LR4 quad-lane, hot-pluggable transceiver module supporting 40Gbps links over single-mode fiber up to 10km.
It uses single-mode fiber (SMF) with LC duplex connectors for reliable 40G transmission.
The QSFP-40GE-LR4 supports optical links up to 10 kilometers over single-mode fiber.
It employs four CWDM wavelengths centered at 1271nm, 1291nm, 1311nm, and 1331nm for 40G transmission.