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StarTech. com QSFP40GLR4ST Cisco QSFP-40G-LR4 Compatible QSFP+ Module - 40GBASE-LR4 40GbE Single Mode Fiber LC Transceiver
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Product Features
Technical Overview
This 40GBASE-LR4 QSFP+ transceiver operates over single-mode fiber using four wavelengths in the 1270nm to 1330nm range to achieve 40 Gbps throughput. The LC duplex connector provides a standard interface for optical fiber cabling, ensuring secure connections in data center and enterprise network environments. The module's electrical interface complies with QSFP+ MSA specifications, guaranteeing signal integrity and reliable data transmission.
The transceiver's compact dimensions—0.50" (12.70 mm) height, 0.70" (17.78 mm) width, and 2.80" (71.12 mm) depth—make it suitable for high-density switch installations. With an approximate weight of 1.60 oz (45.36 g), it adds minimal load to network equipment while maintaining robust construction for continuous operation in demanding environments.
Key Product Advantages
This transceiver module offers several distinct advantages for network deployments requiring 40GbE connectivity. Its certified compatibility with Cisco switching platforms provides peace of mind for network engineers managing heterogeneous environments. The lifetime warranty from StarTech.com covers the module itself, offering long-term value and reducing total cost of ownership compared to OEM alternatives.
Verified Cisco Compatibility
Tested and validated for use with Cisco Firepower switches, ASR1000/9000 series routers, and Catalyst 9300/3850 switches. The module operates without voiding existing OEM support agreements.
- Firepower series switches
- ASR1000/9000 routers
- Catalyst 9300/3850 switches
Broad Platform Support
Works with MSA-compliant switches from multiple vendors including Ubiquiti, D-Link, Netgear, Supermicro, and TP-Link that accept uncoded QSFP+ modules.
- Ubiquiti switches
- D-Link switches
- Netgear switches
- Supermicro switches
- TP-Link switches
Comprehensive Technical Support
Backed by StarTech.com's technical advisory team available 24/5 for installation guidance and troubleshooting assistance throughout the module's service life.
Deployment / Use Cases
This 40GBASE-LR4 QSFP+ transceiver is ideal for connecting network switches and routers over extended distances in campus networks, data center interconnects, and metropolitan area network (MAN) applications. The 10-kilometer reach enables connectivity between buildings or across larger facilities without requiring intermediate network equipment, simplifying network architecture and reducing latency.
Common deployment scenarios include spine-leaf data center architectures where 40GbE links connect aggregation switches, high-performance computing clusters requiring low-latency interconnects, and network backbone upgrades from 10GbE to 40GbE. The module supports both data networking and optical network applications, making it suitable for service provider networks, enterprise core switching, and storage area network (SAN) extensions.
Physical Profile
The transceiver features a standard QSFP+ form factor with dimensions optimized for high-density switch configurations. The compact design allows maximum port utilization in 1U switch chassis while maintaining proper airflow for thermal management. The module's lightweight construction minimizes stress on switch backplanes during installation and removal cycles.
- Width
- 0.70" (17.78 mm)
- Depth
- 2.80" (71.12 mm)
- Height
- 0.50" (12.70 mm)
- Weight
- 1.60 oz (45.36 g)
Highlights
- 40GBASE-LR4 QSFP+ optical transceiver for 40 Gigabit Ethernet networks
- Cisco QSFP-40G-LR4 compatible - tested with Firepower, ASR, and Catalyst series
- Single-mode fiber support with LC duplex connector for 10km reach
- Digital Diagnostic Monitoring (DDM) for real-time performance tracking
- Hot-swappable design for installation without network downtime
- MSA compliant for use with multi-vendor switch platforms
- Lifetime warranty backed by StarTech.com technical support
- RoHS, REACH, and WEEE compliant for environmental responsibility
Specifications
| Specifications | |
|---|---|
| Manufacturer | StarTech.com |
| Manufacturer Part Number | QSFP40GLR4ST |
| Brand Name | StarTech.com |
| Product Name | Cisco QSFP-40G-LR4 Compatible QSFP+ Transceiver Module - 40GBASE-LR4 |
| Product Type | QSFP+ |
| Packaged Quantity | 1 Each |
| Technical Information | |
| Application/Usage | Data Networking,Optical Network |
| Interfaces/Ports | |
| Total Number of Ports | 1 |
| Connector Type | LC |
| Interfaces/Ports Details | 1 x LC Duplex 40GBase-LR4 Network |
| Media & Performance | |
| Media Type Supported | Optical Fiber |
| Fiber Mode Supported | Single-mode |
| Ethernet Technology | 40 Gigabit Ethernet |
| Network Technology | 40GBase-LR4 |
| Physical Characteristics | |
| Form Factor | Hot-pluggable,Hot-swappable |
| Height | 0.50" (12.70 mm) |
| Width | 0.70" (17.78 mm) |
| Depth | 2.80" (71.12 mm) |
| Weight (Approximate) | 1.60 oz (45.36 g) |
| Miscellaneous | |
| Compatibility | MSA Compliant Cisco Firepower Switches: ASR1000 ASR9000 C9300 C3850 |
| Country of Origin | China |
| Environmentally Friendly | Yes |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS),Registration, Evaluation, Authorization and Restriction of Chemicals (REACH),Waste Electrical and Electronic Equipment Directive (WEEE) |
| Warranty | |
| Limited Warranty | Lifetime |
User Manual
FAQ
What switches is this QSFP+ transceiver compatible with?
This transceiver is specifically tested and verified for compatibility with Cisco switches including Firepower series, ASR1000/9000 routers, and Catalyst 9300/3850 switches. It also works with MSA-compliant switches from other manufacturers such as Ubiquiti, D-Link, Netgear, Supermicro, and TP-Link that accept uncoded QSFP+ modules. The module is designed to Multi-Source Agreement standards to ensure broad interoperability in heterogeneous network environments.
What type of fiber and distance does this 40GBASE-LR4 module support?
This QSFP+ transceiver operates over single-mode fiber (SMF) using an LC duplex connector. It supports link distances up to 10 kilometers (approximately 6.2 miles) for 40 Gigabit Ethernet connections. The module uses four wavelengths in the 1270nm to 1330nm range to achieve 40 Gbps throughput over single-mode fiber, making it suitable for campus networks, data center interconnects, and metropolitan area network applications.
Does this transceiver include Digital Diagnostic Monitoring (DDM) capabilities?
Yes, this QSFP+ transceiver features Digital Diagnostic Monitoring (DDM) that provides real-time monitoring of key performance parameters. The DDM functionality reports temperature, voltage, laser bias current, transmitted optical power, and received optical power to most SNMP-based network management tools. This allows network administrators to proactively monitor transceiver health, troubleshoot link issues, and plan maintenance before problems affect network performance.
Is this transceiver hot-swappable and what are its physical dimensions?
Yes, this QSFP+ transceiver is designed for hot-pluggable and hot-swappable operation, allowing installation and removal without powering down network equipment. The module has compact dimensions of 0.50" (12.70 mm) in height, 0.70" (17.78 mm) in width, and 2.80" (71.12 mm) in depth, with an approximate weight of 1.60 oz (45.36 g). These dimensions are standard for QSFP+ form factors and ensure compatibility with high-density switch configurations while maintaining proper airflow for thermal management.
What warranty and support does StarTech.com provide for this transceiver?
StarTech.com provides a lifetime warranty for this QSFP+ transceiver module, covering the module itself for its service life. The warranty is backed by technical support from StarTech.com's advisory team, available 24 hours a day, 5 days a week for installation assistance and troubleshooting. Importantly, using this compatible module does not void existing OEM support agreements for your network equipment, providing flexibility in sourcing while maintaining vendor support relationships.
What environmental standards does this transceiver comply with?
This QSFP+ transceiver complies with multiple environmental standards including Restriction of Hazardous Substances (RoHS), Registration, Evaluation, Authorization and Restriction of Chemicals (REACH), and Waste Electrical and Electronic Equipment Directive (WEEE). These compliances ensure the module meets international environmental regulations for hazardous substance restrictions, chemical safety, and responsible end-of-life disposal. The product is manufactured in China with these environmental considerations integrated throughout the production process.
| Qty | Price | Available |
|---|
