United StatesName:
Added to cart 28 times recently
In stock - Ready to Ship
$12,860.00
$713.0094.5% off
Quantity:
Business price:
3 Year Extended Warranty
Same-day Shipping
14-Day Money Back Guarantee
Shipping:
Payment:
3 Year Extended Warranty
Same-day Shipping
14-Day Money Back Guarantee
Need Additional Discount on Product?
Request a quote below - Get Exclusive Pricing and Support.
Shipping:
Payment:
QSFP-40G-LR4-S
QSFP 40GBASE-LR4 Trnscvr Mod. LC. 10km. Enterprise-Class
TRUSTED, TRIED, PROVEN
Inventory Delivered By
& Verified By
Solutions Powered By
QSFP-40G-LR4-S is a QSFP optical transceiver module engineered for 40G Ethernet applications. It employs LC connectors and leverages four separate optical channels optimized for single-mode fiber, making it ideally suited for long-range transmission environments.
QSFP-40G-LR4-S supports a 40G data rate and is designed in a QSFP form factor with standardized physical dimensions for data centers, enterprise networks, and telecom deployments. It meets stringent protocol requirements for Ethernet while offering reliable performance over extended distances.
QSFP-40G-LR4-S price is $713.00, a 94.5% saving from the Cisco list price of $12,860.00. QSFP-40G-LR4-S is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QSFP-40G-LR4-S for additional pricing. Browse the full Cisco 40G Optical Modules series or explore all Cisco products.
To get the detailed certification, please go to the Compliance Center.
 QSFP-40G-LR4-S |  QSFP-40G-CSR-S= |  CVR-CFP-4SFP10G= |  CFP-40G-FR= |  QSFP-40G-SR-BD= | |
|---|---|---|---|---|---|
| Compatibility | Cisco / Juniper / Huawei / Arista | Cisco / Juniper / Huawei / Arista | N/A | Cisco, Juniper, Huawei, Arista | Cisco / Juniper / Huawei / Arista |
| Connector Type | LC | LC | LC | LC | LC |
| Data Rate | 40G | 40G | 10G | 40G | 40G |
| Depth | N/A | 2.85 inches | N/A | 7.5 inches | N/A |
| Fiber Type | Single-mode | Multi-mode | N/A | Single-mode | Multi-mode |
| Form Factor | QSFP | QSFP | CFP | CFP | QSFP |
| Height | N/A | 0.33 inches | N/A | 1.2 inches | N/A |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Max Distance | 10 km | 100 meters | N/A | 10 km | 150 meters |
| Network Interface | Ethernet | Fiber | Ethernet | Fiber | 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 | 5.0 W | 3.5W | N/A | 6.0W | 3.8W |
| Product Name | QSFP-40G-LR4-S | QSFP-40G-CSR-S= | CVR-CFP-4SFP10G= | CFP-40G-FR= | QSFP-40G-SR-BD= |
| 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, Fibre Channel | Ethernet |
| Transmission Distance | Long-Range | Short-Range | Short-Range | Long-Range | Short-Range |
| Wavelength | 1310 nm | 850nm | N/A | 1310nm | 850nm |
| Weight | N/A | 0.1 lbs | N/A | 1.5 lbs | N/A |
| Width | N/A | 0.64 inches | N/A | 4.4 inches | N/A |
QSFP-40G-LR4-S delivered stable 40G connectivity over 10km. Clean optical levels and seamless integration into our enterprise core.
Reliable 40GBASE-LR4 performance with consistent throughput across single-mode fiber.
Strong signal integrity and predictable latency in production workloads.
Integrated easily into our aggregation switches. Solid 40GbE long-range solution.
Excellent 10km reach with dependable performance under peak traffic.
Enterprise-class optics maintaining stable 40G bandwidth.
Clean installation and reliable long-distance 40G connectivity.
The QSFP-40G-LR4-S is an enterprise-class QSFP 40GBASE-LR4 optical transceiver module supporting 40 Gbps links over single-mode fiber up to 10 km with an LC duplex interface.
This module supports a maximum single-mode fiber link length of 10 kilometers at 40 Gbps when used with compliant LC-terminated fiber.
It uses a standard dual LC connector interface, ensuring broad compatibility with existing single-mode fiber infrastructure.
The QSFP-40G-LR4-S complies with IEEE 802.3ba 40GBASE-LR4 and MSA specifications for the QSFP form factor.