Startech
StarTech.com MSA Compliant 40GBase-LR4 QSFP+ - 40G QSFP+ Fiber Transceiver Module - SM LC - 10 km [6.2 mi] - 1270nm-1330nm (qsfp40lr4st)
- SKU:
- 21207275
- MPN:
- qsfp40lr4st
- Availability:
- Usually ships the same or next business day. In stock at our IL warehouse.
- Shipping:
- Calculated at Checkout
- Stock Update:
- 12/13/2025 02:10:40 AM PST
Bulk discount rates
Below are the available bulk discount rates for each individual item when you purchase a certain amount
| Buy 2 | and pay only $196.35 each 196.35 |
| Buy 3 or above | and pay only $189.45 each 189.45 |
- Stock Update:
- 12/13/2025 02:10:40 AM PST
Description
This item is brand-new, factory sealed.
Add reliable and cost-effective 40 Gigabit Ethernet connections over single-mode fiber, with this QSFP+ module. This 40GBase-LR4 QSFP+ module delivers what you need most in your network connections: reliable performance. It's built to exacting MSA specifications and fully tested to ensure seamless compatibility. The single-mode QSFP+ transceiver module offers a cost-effective way to add, replace or upgrade the ports on your networking equipment, and it's backed by a lifetime warranty.
Delivers 40 Gigabit Ethernet connections
With data transfer rates of up to 40Gbps and support for Digital Diagnostics Monitoring (DDM / DOM), this QSFP+ module can be installed into fiber networking equipment with an MSA compliant port, using an LC connector. It delivers dependable 40 Gigabit connectivity over single-mode fiber for 40GBase-LR4 compliant networks, with a maximum distance of up to 10 km (6.2 mi.) and 1270 nm to 1330 nm optical wavelength.
Built for reliable network performance
This optical transceiver is engineered to meet or exceed the industry's MSA (Multi-Source Agreement) standards. StarTech.com brings its established reputation for high-quality connectivity solutions to SFP transceivers, providing SFPs that match major OEM brands in performance and reliability. Committed to the highest standards, StarTech.com provides an extensive range of networking products including copper and fiber network cards, fiber media converters, Ethernet switches and wireless products.
Convenient and scalable
Delivering both convenience and scalability, this fiber transceiver is fully hot-pluggable, which enables you to install it without interrupting network traffic or having to reboot your equipment. It provides a versatile solution that's compatible with a wide range of networking equipment, allowing you to expand your network to remote segments cost-effectively.
You can count on QSFP40LR4ST for reliable performance, backed by a lifetime warranty and free lifetime technical support.
Features
Yes
Compatibility:
MSA Compliant
Environmental Compliance:
Waste Electrical and Electronic Equipment Directive (WEEE)
Restriction of Hazardous Substances (RoHS)
Registration, Evaluation, Authorization and Restriction of Chemicals (REACH)
Country of Origin:
China
Specs
| Physical Characteristics | |
| Form Factor | Hot-swappable |
| Weight (Approximate) | 0.09 lb |
| Height | 0.5" |
| Width | 0.7" |
| Depth | 2.8" |
| Warranty | |
| Limited Warranty | Lifetime |
| Interfaces/Ports | |
| Total Number of Ports | 1 |
| Connector Type | LC |
| Interfaces/Ports Details | 1 x LC Duplex 40GBase-LR4 Network |
| General Information | |
| Brand Name | StarTech.com |
| Manufacturer Website Address | http://www.startech.com |
| Marketing Information | The QSFP40LR4ST is an MSA compliant fiber QSFP+ transceiver that's designed, programmed and tested to work with 40GBASE-LR4 compatible MSA switches and routers. The QSFP+ transceiver module supports a maximum distance of up to 10 km (6.2 mi) and delivers dependable 40 GbE connectivity over fiber cabling. Technical Specifications: Wavelength: 1270nm to 1330nm Maximum Data Transfer Rate: 40 Gbps Type: Single Mode Fiber Connection Type: LC Connector Maximum Transfer Distance: 10 km (6.2 mi) MTBF: 1,489,426 hours Power Consumption: Less than 2.5 Watts DDM: Yes This QSFP+ fiber module is hot-swappable, making upgrades and replacements seamless by minimizing network disruptions. StarTech.com SFPs All StarTech.com SFP & SFP+ transceiver modules are backed by a lifetime warranty and free lifetime multilingual technical support. StarTech.com offers a wide variety of SFP modules and direct-attach SFP Cables, providing the convenience and reliability you need to ensure dependable network performance. |
| Product Type | QSFP+ |
| Product Name | QSFP+ Module |
| Manufacturer | StarTech.com |
| Manufacturer Part Number | QSFP40LR4ST |
| Packaged Quantity | 1 Each |
| Media & Performance | |
| Ethernet Technology | 40 Gigabit Ethernet |
| Media Type Supported | Optical Fiber |
| Fiber Mode Supported | Single-mode |
| Network Technology | 40GBase-LR4 |
| Technical Information | |
| Application/Usage |
|
Warranty Information
