QSFP40LR4ST StarTech.com MSA Compliant QSFP+ Transceiver Module - 40GBASE-LR4~MSA Uncoded QSFP+ Module - 40GBASE-LR4 - 40GbE Single Mode Fiber (SMF) Optic Transceiver - 40GE Gigabit Ethernet QSFP+ - LC 10km - 1270nm to 1330nm - DDM
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MSA Compliant QSFP+ Transceiver Module - 40GBASE-LR4~MSA Uncoded QSFP+ Module - 40GBASE-LR4 - 40GbE Single Mode Fiber (SMF) Optic Transceiver - 40GE Gigabit Ethernet QSFP+ - LC 10km - 1270nm to 1330nm - DDM
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QSFP40LR4ST Overview
STARTECH Msa Compliant 40 Gigabit Fiber Qsfp+ Transceiver Module - 40gbase-lr4 - Sm Lc - 10 Km - Qsfp+ Transceiver Module - 40 Gigabit ETHERNET(QSFP40LR4ST)
StarTech.com MSA Uncoded Compatible QSFP+ Module - 40GBASE-LR4 - 40GbE Single Mode Fiber (SMF) Optic Transceiver - 40GE Gigabit Ethernet QSFP+ - LC 10km - 1270nm to 1330nm - DDM (QSFP40LR4ST)
- 100% MSA UNCODED QSFP+ TRANSCEIVER: Designed, programmed and tested to work with compatible MSA Compliant switches and routers to deliver reliable 40GbE connectivity
- TECHNICAL SPECS: 40GBASE-LR4 / 40Gbps / Single Mode (SMF) / LC Connector / 1270nm to 1330nm / Digital Diagnostic Monitoring (DDM) / Distances up to 10km (6.2mi)
- TESTED FOR COMPATIBILITY: Hot-swappable in MSA Compliant routers and switches; DDM support reports the transceiver's status to most SNMP network management tools.
- WORKS WITH MSA COMPLIANT SWITCHES: Works with switch models from Ubiquiti, D-Link, Netgear, Supermicro, TP-Link and more that accept uncoded modules
- THE IT PRO’S CHOICE: Designed and built for IT Professionals, this SFP module is backed for life (lifetime of module, not network switch), including free lifetime 24/5 multi-lingual technical assistance
- QSFP+ Fiber optic 40000 Mbit/s
- Hot-Plug support
- Power consumption (typical): 2.5 W
Summary Description
StarTech.com MSA Compliant QSFP+ Transceiver Module - 40GBASE-LR4~MSA Uncoded QSFP+ Module - 40GBASE-LR4 - 40GbE Single Mode Fiber (SMF) Optic Transceiver - 40GE Gigabit Ethernet QSFP+ - LC 10km - 1270nm to 1330nm - DDM. SFP transceiver type: Fiber optic, Maximum data transfer rate: 40000 Mbit/s, Interface type: QSFP+. Product colour: Silver, Housing material: Aluminium, Mean time between failures (MTBF): 1489426 h. Power consumption (typical): 2.5 W. Width: 18.4 mm, Depth: 72 mm, Height: 13 mm. Number of products included: 1 pc(s), Package width: 92 mm, Package depth: 117 mm
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Specifications
Overview
| Condition | New |
|---|---|
| Brand | StarTech.com |
| Stock | In Stock |
Performance
| SFP transceiver type | Fiber optic |
|---|---|
| Maximum data transfer rate | 40000 Mbit/s |
| Interface type | QSFP+ |
| Single-mode fiber (SMF) supported | Yes |
| Multi-mode fiber (MMF) supported | No |
| Fiber optic connector | LC |
| SFP transceiver standard | LR4 |
| Maximum transfer distance | 10000 m |
| Tx wavelength (min) | 1270 nm |
| Tx wavelength (max) | 1330 nm |
| Networking standards | IEEE 802.3ba |
| Duplex system | Full |
| Digital Diagnostics Monitoring (DDM) | Yes |
Features
| Product colour | Silver |
|---|---|
| Housing material | Aluminium |
| Hot-Plug support | Yes |
| Mean time between failures (MTBF) | 1489426 h |
| Certification | CE, FCC, UR, REACH |
Power
| Power consumption (typical) | 2.5 W |
|---|
Operational conditions
| Operating temperature (T-T) | 0 - 70 °C |
|---|---|
| Storage temperature (T-T) | -40 - 85 °C |
| Operating relative humidity (H-H) | 5 - 95% |
Weight & dimensions
| Width | 18.4 mm |
|---|---|
| Depth | 72 mm |
| Height | 13 mm |
| Weight | 40 g |
Packaging data
| Number of products included | 1 pc(s) |
|---|---|
| Package width | 92 mm |
| Package depth | 117 mm |
| Package height | 32 mm |
| Package weight | 76 g |
Technical details
| Sustainability certificates | RoHS |
|---|
Logistics data
| Master (outer) case width | 250 mm |
|---|---|
| Master (outer) case length | 300 mm |
| Harmonized System (HS) code | 85369010 |
| Master (outer) case height | 200 mm |
| Products per master (outer) case | 36 pc(s) |
Resources
Documents
Frequently Asked Questions
What is the maximum transmission distance supported by the QSFP40LR4ST? +
The StarTech.com QSFP40LR4ST is designed for high-speed connectivity over single-mode fiber (SMF), supporting reliable data transmission for distances up to 10 kilometers. This makes it an ideal solution for interconnecting enterprise network switches and routers across large campus environments or between data center facilities without signal degradation.
Is the QSFP40LR4ST transceiver compatible with non-StarTech networking equipment? +
Yes, this is an MSA (Multi-Source Agreement) compliant transceiver. Because it is uncoded, it is designed to operate seamlessly with any networking equipment that adheres to standard MSA protocols. You can reliably integrate this module into various vendor-agnostic switch environments without worrying about proprietary locking mechanisms common in some branded optics.
Does the QSFP40LR4ST module support Digital Diagnostics Monitoring (DDM)? +
Absolutely. The module includes integrated Digital Diagnostics Monitoring (DDM) capabilities. This allows network administrators to monitor real-time operating parameters such as optical output power, input power, temperature, laser bias current, and transceiver supply voltage. DDM is essential for proactive network maintenance and troubleshooting link-level performance issues before they cause downtime.
What type of fiber optic cabling and connectors does this 40G transceiver require? +
This 40GBASE-LR4 transceiver is engineered specifically for single-mode fiber (SMF) infrastructure. It utilizes an industry-standard duplex LC connector interface. When deploying, ensure you are using OS2 single-mode patch cables to maintain signal integrity and meet the performance specifications required for a 10km reach at 40Gbps speeds.
What are the operating wavelengths for the QSFP40LR4ST? +
The transceiver utilizes four wavelengths within the 1270nm to 1330nm range to achieve 40Gbps throughput. By multiplexing these four lanes into a single fiber strand, the module provides the necessary bandwidth for high-density Gigabit Ethernet applications while maintaining a compact QSFP+ form factor, ensuring efficient use of switch port density.
Can I use the QSFP40LR4ST in a 40GbE switch port designed for standard QSFP+ modules? +
The module follows the standard QSFP+ form factor, meaning it is physically and electrically compatible with any switch or router port designated for standard QSFP+ transceivers. As long as your switch hardware supports the 40GBASE-LR4 standard and requires MSA-compliant optics, this module will provide a stable, high-performance physical layer connection.
How does the power consumption of this module compare to other 40G transceivers? +
StarTech.com designs these modules for maximum efficiency to minimize heat dissipation within high-density switch environments. While power consumption varies based on the specific system load and environment, this module operates within standard power envelopes for 40GBASE-LR4 hardware, helping to maintain energy efficiency throughout your core network infrastructure.
What are the primary use cases for the QSFP40LR4ST in an enterprise network? +
This transceiver is primarily deployed for high-speed backbone connections between core switches, data center uplinks, and long-range inter-switch links. Its 10km reach and 40Gbps throughput make it perfectly suited for high-bandwidth enterprise environments where reliable, low-latency connectivity is required across extended distances within or between buildings.
Why should I purchase my StarTech networking hardware from BuyRouterSwitch.com? +
BuyRouterSwitch.com is a dedicated source for enterprise-grade networking components. We prioritize authenticity and reliability in our supply chain, ensuring that the hardware you receive meets manufacturer specifications. By choosing us, you are partnering with a specialist provider that understands the technical demands of high-performance network infrastructure and is committed to sourcing professional-grade equipment for your project needs.
Does BuyRouterSwitch.com offer volume pricing or quotes for large-scale enterprise deployments? +
Yes, we specialize in supporting large-scale network infrastructure projects. If you are planning a deployment that requires a high volume of QSFP40LR4ST modules or other networking equipment, please contact our sales department. We are equipped to handle bulk inquiries and can provide professional quotes tailored to your project requirements, helping you streamline your procurement process effectively.
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