Cisco QSFP-40GE-LR4-S Transceiver Module – 40GBASE-LR4, 1310nm, Single-Mode Fiber, 10km
The Cisco QSFP-40GE-LR4-S is a 40 Gigabit Ethernet QSFP+ optical transceiver designed for high-speed network connectivity over single-mode fiber. It uses 40GBASE-LR4 optical technology at 1310nm and supports link distances of up to 10km over standard G.652 single-mode fiber.
This S-Class QSFP module uses four optical wavelengths with multiplexing and demultiplexing handled within the module. It features a duplex LC interface and is designed for compatible Cisco 40 Gigabit Ethernet switching and routing platforms.
Cisco QSFP-40GE-LR4-S Technical Specifications
| Specification |
Details |
| Brand |
Cisco |
| Model |
QSFP-40GE-LR4-S |
| Form Factor |
QSFP+ |
| Ethernet Standard |
40GBASE-LR4 |
| Data Rate |
40 Gigabit Ethernet |
| Wavelength |
1310nm nominal; four wavelengths |
| Fiber Type |
Single-Mode Fiber (SMF) |
| Fiber Standard |
G.652 |
| Maximum Reach |
Up to 10km |
| Connector |
Duplex LC |
| Optical Architecture |
Four-wavelength multiplexing and demultiplexing |
| Optical Lane Wavelengths |
1271nm, 1291nm, 1311nm, 1331nm |
| Maximum Transmit Power |
+2.3 dBm per lane |
| Minimum Transmit Power |
-7 dBm per lane |
| Maximum Receive Power |
+2.3 dBm per lane |
| Minimum Receive Power |
-13.7 dBm per lane |
| Power Consumption |
Approximately 3.5W |
| Class |
S-Class |
| FCoE Support |
Not supported |
Cisco QSFP-40GE-LR4-S 40GBASE-LR4 Features
40GbE Long-Range Optical Connectivity
The QSFP-40GE-LR4-S provides 40GbE connectivity across distances of up to 10km using G.652 single-mode fiber, making it suitable for longer-distance campus, enterprise, and data-center interconnect applications.
Four-Wavelength 1310nm Optical Design
The module carries the 40 Gigabit Ethernet signal over four optical wavelengths around the 1310nm band. Optical multiplexing and demultiplexing are handled inside the transceiver.
Duplex LC Fiber Interface
A duplex LC connector provides a standard interface for two-fiber single-mode optical links and simplifies integration with existing fiber infrastructure.
Applications
- 40 Gigabit Ethernet switch-to-switch connections
- Data center interconnects
- Enterprise core network uplinks
- Campus backbone connectivity
- Long-distance 40GbE network links
- Single-mode fiber infrastructure requiring up to 10km reach
Compatibility
The Cisco QSFP-40GE-LR4-S should be installed only in Cisco platforms that specifically support this QSFP module or its corresponding Cisco 40GBASE-LR4 S-Class transceiver. Platform-specific software and hardware compatibility should be checked before installation.
The S-Class version supports the 40G Ethernet rate only and does not support FCoE. It should not be treated as identical to the standard QSFP-40G-LR4 version, which has additional OTU3 data-rate support.
Cisco QSFP-40GE-LR4-S Price in Bangladesh
The price of the Cisco QSFP-40GE-LR4-S Transceiver Module in Bangladesh depends on product condition, sourcing, warranty, and availability. For the latest price and purchasing information, contact Datacom Technologies (BD).
Why Choose Cisco QSFP-40GE-LR4-S?
- 40GBASE-LR4 optical connectivity
- Up to 10km transmission over G.652 SMF
- 1310nm four-wavelength optical architecture
- Duplex LC connector for standard fiber infrastructure
- Suitable for compatible Cisco 40GbE networking platforms
- Professional networking solution from Cisco
Buy Cisco QSFP-40GE-LR4-S in Bangladesh
For Cisco QSFP-40GE-LR4-S pricing, compatibility assistance, and procurement support in Bangladesh, contact Datacom Technologies (BD).
Email: sales@datacom.com.bd
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