StarTech.com
StarTech.com QSFP40LR4ST network transceiver module
Best high-speed connectivity solution for enterprise-grade fiber network upgrades.
Enhance your network performance with the StarTech.com QSFP40SR4ST transceiver module, engineered for seamless integration with 40GBASE-SR4 compatible switches and routers. This high-speed module reliably delivers 40 Gbps data transfer over multi-mode fiber cabling, supporting distances up to 150 meters (492 ft). Its hot-swappable design allows for easy upgrades without network downtime. Backed by a lifetime warranty and expert technical support, this transceiver offers dependable connectivity for demanding IT environments looking to maximize their data throughput efficiently.
Owner Satisfaction
4.7
/ 5
Category Rank
21
/ 2576
#21 in Repeaters & Transceivers
Data Transfer Rate
40
/ Gbps
Who it's for
- IT managers seeking high-performance networking on a budget
- Network administrators managing multi-vendor hardware environments
- System architects prioritizing long-term reliability and support
Who should skip it
- Enterprise teams relying on strict OEM support contracts
- Network engineers concerned about future firmware compatibility
- Data center technicians requiring deep proprietary diagnostic insights
Performance breakdown
Data Throughput
Delivers consistent 40 Gbps speeds for high-demand enterprise network environments.
Installation Ease
Hot-swappable design allows for rapid upgrades without interrupting critical network operations.
Transmission Range
Reliable multi-mode fiber performance reaches up to 150 meters effectively.
Build Reliability
Lifetime warranty coverage underscores the manufacturer's commitment to long-term hardware stability.
Compatibility
Standardized QSFP+ interface ensures seamless integration with most 40GBASE-SR4 hardware.
Signal Integrity
Optimized 850 nm wavelength provides stable, low-latency data transmission over fiber.
Key Specs
Data Transfer Rate
40 Gbps
Wavelength
850 nm
Maximum Distance
150 m (492 ft)
Connector Type
QSFP+
Fiber Type
Multi-mode
Supported Protocols
40GBASE-SR4 compatible
Connectivity Technology
Ethernet
Warranty
Lifetime
Features
- Supports 40 Gbps data transfer rate
- Up to 150m range over multi-mode fiber
- Hot-Swappable design for easy upgrades
- Lifetime warranty included
- Compatible with 40GBASE-SR4 standards
- Utilizes 850 nm wavelength
- QSFP+ connector type
- Ensures reliable high-speed connectivity
What customers say
Customers overwhelmingly praise the StarTech.com QSFP40LR4ST module for its exceptional value and reliability, positioning it as a superior, cost-effective alternative to expensive OEM transceivers. Network professionals report seamless plug-and-play compatibility across major platforms like Cisco and Juniper, avoiding vendor lock out issues. The module consistently delivers stable 40Gbps performance over required distances, meeting high-density data center needs. The core appeal is achieving massive cost savings without sacrificing quality or operational stability. Reviews indicate high long term reliability, making this module a smart, high performing choice that effectively balances budget constraints with demanding technical requirements.
Know before you buy
This module supports data transmission up to 150 meters (492 feet) when using multi-mode fiber cabling.
No, the module features a hot-swappable design, allowing you to install or replace it while your switch or router is running without causing network downtime.
Yes, it is fully compliant with 40GBASE-SR4 standards, making it compatible with any switch or router that supports this specific protocol.
This transceiver is designed specifically for use with multi-mode fiber optic cabling.
This product is backed by a lifetime warranty, ensuring long-term reliability and support for your network infrastructure.
Still have a question?
Ask Hayley anything about this product before you decide.