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LQ-M8540-SR4I 40g qsfp+ 850nm 300m mpo-12 dom mmf optical transceiver module (industrial)
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LINK-PP LQ-M8540-SR4I 40G QSFP+ 850nm 300m MPO-12 DOM MMF Optical Transceiver Module (Industrial)

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Product summary

Product
LINK-PP LQ-M8540-SR4I 40G QSFP+ 850nm 300m MPO-12 DOM MMF Optical Transceiver Module (Industrial)
SKU
221334
P/N
LQ-M8540-SR4I
Price
$ 85
Stock
580 in Stock
Sold
220
For Order Over $1000 Get $15.00 Off , Code: Linkpp15
For Order Over $3000 Get $50.00 Off , Code: Linkpp50
For Order Over $5000 Get $100.00 Off , Code: Linkpp100
New Users: $10 Coupon for Orders , Code: linkpp2610
40 Reviews
4 Questions
220 Sold
$ 85 0% OFF )
Free shipping. For wholesale pricing, please contact us directly.
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$ 85
100
$ 80.75
1000
$ 78.2
3000
$ 75.65
6000
$ 73.1
Manufacture: LINK-PP P/N: LQ-M8540-SR4I SKU: 221334
Shipping:
Free Shipping
to United States via FedEx
Estimated delivery time : 3 - 10 days.
5-Year Warranty 30-Day Returns 30-Day Exchange
Warranty
  • Providing industry-leading 5-year warranty.
  • Read the table for details of all products' warranty.
Returns & Exchange
  • Refunds will be received about 5 business days after the receipt of returned items.
  • Items in stock for replacement can be shipped within 1 business day.
  • Read the full return policy for details.
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LINK-PP LQ-M8540-SR4I 40G QSFP+ Specifications

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

Key Features of LINK-PP LQ-M8540-SR4I 40G QSFP+

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.

LINK-PP LQ-M8540-SR4I 40G QSFP+ Optical Module

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.

LQ-M8540-SR4I: 40G Connectivity for Network Interface Cards

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.

LQ-M8540-SR4I Module with 850nm Wavelength

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.

LQ-M8540-SR4I Module Supporting 300m Transmission

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.

LQ-M8540-SR4I Module with MPO-12 Interface

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.

LQ-M8540-SR4I Module with DOM for Real-Time Monitoring

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.


LINK-PP LQ-M8540-SR4I 40G QSFP+ Certification

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.

Optical Transceivers Testing

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.

LQ-M8540-SR4I Quality Certifications

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.

LQ-M8540-SR4I Certified for Reliable Host-Device Compatibility

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.


Rigorous Testing Ensures Reliable QSFP+ Performance

Our strict laboratory evaluation protocols guarantee exceptionally reliable QSFP+ performance, ensuring your enterprise network operates flawlessly under continuous heavy data loads.

Optical

Optical Spectrum Test

We conduct precise optical spectrum tests to verify center wavelength accuracy and signal stability.

Optical

Eye Pattern Test

The comprehensive eye pattern test guarantees optimal transmitter output quality and exceptionally low jitter.

Optical

Bit Error Rate Test

A stringent bit error rate test ensures flawless data transmission with zero packet loss.

Optical

Temperature Test

Extreme temperature testing confirms robust industrial-grade reliability from freezing -40°C to scorching 85°C environments.


Product Shipping for LINK-PP LQ-M8540-SR4I 40G QSFP+

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.

Anti-Static Protective Packaging

Anti-Static Protective Packaging

Premium anti-static protective packaging prevents dangerous electrostatic discharge damage during transit.

Shock-Resistant Transport Protection

Shock-Resistant Transport Protection

Durable shock-resistant transport protection completely shields the delicate optical components inside.

Fast Order Processing and Dispatch

Fast Order Processing and Dispatch

We guarantee fast order processing and dispatch to meet urgent project deadlines.

Global Logistics and International Delivery

Global Logistics and International Delivery

Trusted global logistics networks ensure prompt and highly secure international delivery services.

LINK-PP LQ-M8540-SR4I 40G QSFP+ Usage Demonstration

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.

LQ-M8540-SR4I Technical Support

LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.

Pre-Sales Technical Consultation

Pre-Sales Technical Consultation

Professional technical guidance to help customers select the most suitable LQ-M8540-SR4I modules based on network architecture and application requirements.

Compatibility Verification Support

Compatibility Verification Support

Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.

Deployment & Installation Assistance

Deployment & Installation Assistance

Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.

Long-Term Technical Assurance

Long-Term Technical Assurance

Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.

LINK-PP LQ-M8540-SR4I 40G QSFP+ After-Sales Assurance

LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.

15 days

15-day no-reason return and refund

Free maintenance or replacement

Free replacement for dead-on-arrival (DOA) or defective items within the initial period

Free maintenance

 Free repair services for manufacturing defects throughout the warranty period

Limitations

Warranty exclusions and conditions apply

Model Comparison Table

LINK-PP

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R***t
Belgium
Verified Purchase
4 .0
2026-06-10
FedEx delayed my MPO-12 multimode transceivers by a day, but DOM diagnostics are spot on!
L***h
United Kingdom
Verified Purchase
5 .0
2026-05-10
Deployed these 850nm transceivers across our Dell campus fiber network. MPO-12 connections were seamless! ✨
P***g
Czech Republic
Verified Purchase
5 .0
2026-04-16
Real-time DOM features on these Cisco compatible QSFP+ optics saved our ops team hours. ⏱️
L***r
Indonesia
Verified Purchase
5 .0
2026-04-09
Flawless 40Gbps speeds for my enterprise NAS. ⚡
S***r
Sweden
Verified Purchase
5 .0
2026-03-14
Solid 850nm VCSEL transceivers for UK data centers.
J***g
Greece
Verified Purchase
5 .0
2026-02-02
Perfect 40GBASE-SR4 300m MMF for campus fiber!
C***r
Dominican Republic
Verified Purchase
5 .0
2026-01-11
Handles -40°C in our outdoor cabinets effortlessly! ❄️
J***z
Singapore
Verified Purchase
5 .0
2025-12-19
Excellent 40GBASE-SR4 modules for Europe industrial networking. The PIN receiver sensitivity is super stable.
C***z
Italy
Verified Purchase
5 .0
2025-12-03
Cost-effective industrial 40G QSFP+ module, works perfectly.
A***s
Russian Federation
Verified Purchase
5 .0
2025-12-03
Upgraded our base station backhaul. The wide-temp -40°C to 85°C handles Texas heat perfectly.
S***s
Indonesia
Verified Purchase
5 .0
2025-12-02
Cisco compatible QSFP+ synced instantly. Highly recommend.
D***z
Brazil
Verified Purchase
5 .0
2025-07-21
DDM monitoring works great for our bulk deployment.
L***g
Switzerland
Verified Purchase
5 .0
2025-06-01
We use these for our campus fiber networking and high-speed enterprise NAS. The IEEE 802.3 40GBASE-SR4 protocol compliance is rock solid. Best cost-effective outdoor network equipment USA for harsh machine room environments.
D***n
United States
Verified Purchase
5 .0
2025-05-03
We did a massive multi-brand switch compatibility test. These MPO-12 multimode transceivers linked Dell, Fortinet, and H3C gear instantly. DDM metrics are precise, making our enterprise data center maintenance so much simpler.
L***s
Panama
Verified Purchase
5 .0
2025-02-11
Awesome value for outdoor network equipment USA. The MMF transmission hit exactly 300m without issues.
D***s
Norway
Verified Purchase
5 .0
2025-01-26
Great MMF reach, 300m specs are highly accurate.
F***l
Thailand
Verified Purchase
5 .0
2024-12-17
I was also impressed by their services. They always answered my questions in no time and also helped me finish the configuration. Many thanks...
L***s
Mexico
Verified Purchase
5 .0
2024-11-20
Bulk ordered this industrial 40G QSFP+ module for a machine room. Extremely reliable VCSEL lasers!
M***h
Ukraine
Verified Purchase
5 .0
2024-11-17
Zero packet loss on Arista switches.
J***l
Colombia
Verified Purchase
5 .0
2024-11-04
As a network engineer, finding a reliable industrial 40G QSFP+ module is tough. This 850nm VCSEL transceiver handled our 250m OM4 base station backhaul effortlessly. Incredible TCO for UK data center optics bulk deployments!
J***s
United Kingdom
Verified Purchase
5 .0
2024-11-02
We tested these on HPE Aruba and Extreme gear. Flawless 40Gbps interoperability and zero errors.
L***g
Brazil
Verified Purchase
5 .0
2024-10-27
fantastic! the part work perfectly and shipped extremely Fast!
J***t
Ukraine
Verified Purchase
5 .0
2024-10-18
Easy MPO-12 plug and play, nice optics.
J***l
Ecuador
Verified Purchase
5 .0
2024-10-14
Pushed these 40GBASE-SR4 300m MMF transceivers hard in our outdoor enclosures. The -40 to +85°C industrial rating is legit. MPO-12 DOM data integrates perfectly with our Cisco and Arista monitoring stacks.
P***i
Nepal
Verified Purchase
5 .0
2024-10-04
Outstanding service. Not my first order and certainly not my last. Transceiver guaranteed to work and it always does.
M***u
Denmark
Verified Purchase
5 .0
2024-08-17
Easy to use website and prompt delivery.
J***e
Belarus
Verified Purchase
5 .0
2024-07-11
The customer service was great and responded quickly (my communication was by email). Many payment options. Easy process. Quick customization and shipping.
M***z
Russian Federation
Verified Purchase
5 .0
2024-07-08
work good without any issue. Easy to navigate website, check-out Fast and efficient. Highly recommended and great prices and cheaper than many other stores.Will buy more here in the future.
B***s
United Arab Emirates
Verified Purchase
5 .0
2024-04-06
Every 10/25/40G Transceiver Modules I've purchased from Link-pp works, just like I expect, just like it should.
M***o
Philippines
Verified Purchase
5 .0
2024-03-26
Good service, efficient website. Will come back for more Optical Transceiver Modules.
J***h
Israel
Verified Purchase
5 .0
2024-03-23
Working with l-p.com was a pleasure. The service was great and the Optical Transceiver Module was beyond my expectations. Extremely satisfied. Thank you.
B***m
Germany
Verified Purchase
5 .0
2024-03-11
great website, good prices....very happy
J***l
Hong Kong
Verified Purchase
5 .0
2024-02-27
No problem so far after quite a few orders over the past few years.
W***u
Indonesia
Verified Purchase
5 .0
2024-02-04
Good customer service, happy with the service.
A***o
United States
Verified Purchase
5 .0
2023-10-28
Very quick delivery as always Thanks
N***o
Germany
Verified Purchase
5 .0
2023-08-30
Another buy from l-p.com. Just what I expected.
I***b
New Zealand
Verified Purchase
5 .0
2023-07-12
Good selection of goods. Outstanding service and support!
E***n
United States
Verified Purchase
5 .0
2023-02-04
Great site and great company!
M***n
United States
Verified Purchase
5 .0
2023-01-10
I can always find what I need at l-p.com. Prices are competitive and ordering is very easy.
J***x
Australia
Verified Purchase
5 .0
2023-01-05
I was very happy with the delivery time and my product came unharmed and working.
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