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The LINK-PP LQ-M8540-SR4I is a high-performance 40G QSFP+ transceiver designed for robust industrial-grade networking. Operating at an 850nm wavelength over multimode fiber, this premium optical module delivers exceptional data rates up to 300m. Engineered with a reliable MPO interface, it ensures seamless integration and high-speed connectivity for demanding data center environments.
| LINK-PP Part Number | LQ-M8540-SR4I | Vendor Name | LINK-PP |
| Form Factor | QSFP+ | Max Data Rate | 40Gbps |
| Wavelength | 850nm | Max Cable Distance | 300m |
| Connector | MPO-12 | Media | MMF |
| Transmitter Type | VCSEL | Receiver Type |
PIN |
| Protocols | IEEE 802.3 40GBASE-SR4, SFF-8436 | Operating Temperature Range |
-40°C to +85°C |
Discover the exceptional capabilities of this industrial optical transceiver. It features a wide operating temperature range from -40°C to 85°C, ensuring stability in harsh conditions. With ultra-low power consumption and advanced VCSEL technology, this 40G QSFP+ module guarantees efficient, continuous, and high-speed network transmission.
This hot-pluggable QSFP+ optical module provides exceptional port density and significant system cost savings. Utilizing advanced photonics, the LINK-PP LQ-M8540-SR4I transceiver maximizes bandwidth capacity while maintaining superior signal integrity across modern telecommunication networks.
Delivering flawless 40G connectivity for network interface cards, this transceiver drastically accelerates data processing capabilities. It enables enterprise servers and storage systems to handle massive workloads effortlessly with guaranteed high-bandwidth performance and minimal latency.
Operating precisely at an 850nm wavelength, this optical module utilizes a premium VCSEL laser optimized for short-reach transmission. This optimized light source guarantees minimal signal degradation, ensuring absolute data accuracy across short-distance enterprise architectures.
Capable of supporting reliable 300m transmission distances, this transceiver pairs perfectly with standard OM4 multimode fiber cables. This impressive reach allows for highly flexible and scalable networking layouts within large-scale campus or enterprise data centers.
Featuring a standard 12-fiber MPO interface, this transceiver enables fast, secure, and dense optical connections. The plug-and-play design facilitates incredibly easy installation, significantly reducing cabling complexity and maintenance time in high-density network setups.
Integrated with advanced Digital Optical Monitoring technology, this transceiver allows network administrators to access real-time diagnostics. You can effortlessly track operating temperature, voltage, and laser power, ensuring proactive maintenance and preventing unexpected system downtime.
The LINK-PP LQ-M8540-SR4I 40G QSFP+ module strictly adheres to comprehensive industry certifications. This ensures global compliance, delivering unmatched safety, environmental protection, and operational reliability.
Every module undergoes a rigorous quality testing program before dispatch. Our comprehensive evaluation process guarantees that each transceiver meets the highest standards of structural and functional excellence.
Backed by authoritative global quality certifications including CE, FCC, UKCA, UL, and REACH, this transceiver guarantees top-tier electrical safety and completely eco-friendly manufacturing materials.
Rigorously certified for extensive host-device compatibility, this advanced module seamlessly integrates with major switch and router brands, guaranteeing plug-and-play operation without encountering any frustrating configuration conflicts.
Our strict laboratory evaluation protocols guarantee exceptionally reliable QSFP+ performance, ensuring your enterprise network operates flawlessly under continuous heavy data loads.
We conduct precise optical spectrum tests to verify center wavelength accuracy and signal stability.
The comprehensive eye pattern test guarantees optimal transmitter output quality and exceptionally low jitter.
A stringent bit error rate test ensures flawless data transmission with zero packet loss.
Extreme temperature testing confirms robust industrial-grade reliability from freezing -40°C to scorching 85°C environments.
We prioritize highly secure product shipping for the LINK-PP LQ-M8540-SR4I 40G QSFP+, ensuring your network components arrive in pristine working condition every time.
Premium anti-static protective packaging prevents dangerous electrostatic discharge damage during transit.
Durable shock-resistant transport protection completely shields the delicate optical components inside.
We guarantee fast order processing and dispatch to meet urgent project deadlines.
Trusted global logistics networks ensure prompt and highly secure international delivery services.
Experience straightforward deployment with our interactive usage demonstration. Watch how easily the LINK-PP LQ-M8540-SR4I 40G QSFP+ installs into compatible switches, instantly upgrading your network infrastructure with reliable, high-density fiber optic connectivity for modern industrial environments.
LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.
Professional technical guidance to help customers select the most suitable LQ-M8540-SR4I modules based on network architecture and application requirements.
Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.
Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.
Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.
LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.
15-day no-reason return and refund
Free replacement for dead-on-arrival (DOA) or defective items within the initial period
Free repair services for manufacturing defects throughout the warranty period
Warranty exclusions and conditions apply
![]() Current Model LQ-M8540-SR4I |
|---|
Compatible | LINK-PP | LINK-PP |
Data Rate (Max) | 40Gbps | 40Gbps |
Wavelength | 850nm | 850nm |
Connector | MPO-12 | MPO-12 |
Cable Distance (Max) | 300m | 300m |
Cable Type | MMF | MMF |
Operating Temperature | -40°C to +85°C | 0°C to +70°C |
Form Factor | QSFP+ | QSFP+ |
Transmitter Type | VCSEL | VCSEL |
Receiver Type | PIN | PIN |
Protocols | IEEE 802.3 40GBASE-SR4, SFF-8436 | IEEE 802.3 40GBASE-SR4, SFF-8436 |
| Pictures | ID# | Description | Price | Stock | Add to Cart |
Q: Our procurement team is looking to deploy 500+ pieces for a new campus network. Do you guys offer bulk discounts for large rollouts? By S***s on 2026-03-05
A: Yes, we do! For B2B orders over 100 units, we provide tiered volume pricing. For a 500+ piece deployment, please contact our sales team directly, and we’ll ensure you get the absolute best rate to optimize your project budget. By admin on 2026-03-05
Q: We have outdoor cabinets in Texas where summer heat is brutal. Can this module truly handle extreme temperatures without dropping packets? By D***z on 2026-02-27
A: Yes, this is a true industrial-grade transceiver. It is specifically engineered to operate flawlessly in extreme temperatures ranging from -40°C to +85°C. Your outdoor base station backhaul will remain perfectly stable. By admin on 2026-02-27
Q: Do these transceivers fully comply with IEEE 802.3 and SFF-8436 standards? We need them for strict enterprise compliance audits. By M***n on 2026-01-02
A: Yes, they are 100% compliant with both IEEE 802.3 40GBASE-SR4 and the MSA SFF-8436 standards. You can confidently deploy them in highly regulated environments knowing they meet all global networking protocols. By admin on 2026-01-02
Q: We run a mix of Cisco Nexus and Arista switches in our DC. Will these 40G modules communicate smoothly across different OEM brands? By S***l on 2025-11-23
A: Absolutely! The LQ-M8540-SR4I supports strict multi-brand interoperability. We've rigorously tested them to link Cisco, Arista, and even HPE or Dell switches natively without any protocol mismatch or link-drop issues. By admin on 2025-11-23
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