Our telecom company is planning a massive data center batch deployment next quarter. Do you offer volume discounts for bulk purchasing this 40G PSM4 module?

Yes, we provide aggressive tiered pricing for enterprise B2B procurement. For high-volume deployment orders, please contact our sales team directly to negotiate custom bulk discounts that will significantly optimize your IT infrastructure budget.

We run a mix of Cisco Nexus and Arista 7050X series in our DC. Will these 40G QSFP+ transceivers work seamlessly without throwing third-party warning logs?

Absolutely. The LQ-M3140-L24C is 100% MSA compliant and strictly coded for cross-platform equipment compatibility. Network engineers regularly run multi-brand switch compatibility tests (including Cisco, Arista, and Juniper) with this module, confirming instant plug-and-play recognition and zero third-party lock-out errors.

Can I use OM4 multimode fiber with this module, or does the MPO interface strictly require single-mode fiber (SMF) for the 20km reach?

The LQ-M3140-L24C is specifically engineered with a DFB laser designed exclusively for Single Mode Fiber (SMF) to achieve the 20km transmission distance. You must use SMF paired with an MPO APC connector to eliminate reflection losses; multimode fiber (like OM3/OM4) is not supported for this specific PSM4 adaptation type.

Does this optical module fully comply with industry standard protocols? We need strict adherence for our public sector telecom contracts.

Yes, it is fully certified and adheres strictly to both IEEE 802.3ba and 40GBASE-LR4 industry standards. It passes all rigorous compliance testing, making it a safe, scalable, and reliable choice for government and enterprise-grade networking requirements.

Are LINK-PP QSFP+ transceivers compatible with Cisco switches?

Yes, all 40G QSFP+ modules from LINK-PP are 100% Cisco compatible and tested for seamless integration.

What is FEC (Forward Error Correction)?

FEC (Forward Error Correction) is an error correction technique todetect and correct a limited number of errors in transmitted data without the need for retransmission. It works by adding redundant bits to a bitstream to help the decoder odetect and correct some transmission errors without the need for retransmission. This function needs to be turned on by the transmission device.

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LINK-PP LQ-M3140-L24C 40G QSFP+ 1310nm 20km MPO DOM SMF Optical Transceiver Module

Name: LINK-PP LQ-M3140-L24C 40G QSFP+ 1310nm 20km MPO DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 201982
Price: 182.75 USD
Availability: InStock
Rating: 5 (42 reviews)

# 201982

Product: LINK-PP LQ-M3140-L24C 40G QSFP+ 1310nm 20km MPO DOM SMF Optical Transceiver Module
SKU: 201982
P/N: LQ-M3140-L24C
Price: $ 212.5
Stock: 100 in Stock
Sold: 990
Product URL: https://www.l-p.com/products/491466.htm

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

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Manufacture: LINK-PP

P/N: LQ-M3140-L24C

Compatible:: LINK-PP

Compatible P/N:: LQ-M8540-SR4C | 300m; LQ-M8540-SR4I | 300m; LQ-M3140-LR4C | 10km; LQ-M3140-L24C | 20km

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LINK-PP LQ-M3140-L24C 40G QSFP+ Specifications

The LINK-PP LQ-M3140-L24C is a high-performance 40G QSFP+ optical transceiver engineered for long-distance data transmission. Compliant with IEEE 802.3ba and 40GBASE-LR4 standards, this single-mode fiber module delivers an aggregate bandwidth exceeding 40Gbps. It operates flawlessly over a 20km reach, making it an optimal networking solution for modern data center interconnects.

LINK-PP Part Number	LQ-M3140-L24C	Vendor Name	LINK-PP
Form Factor	QSFP+	Max Data Rate	40Gbps
Wavelength	1310nm	Max Cable Distance	20km
Connector	MPO	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
Operating Temperature Range	0°C to +70°C	Protocols	40G Ethernet, MSA Compliant

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Q: Our telecom company is planning a massive data center batch deployment next quarter. Do you offer volume discounts for bulk purchasing this 40G PSM4 module? By C***s on 2026-05-20

A: Yes, we provide aggressive tiered pricing for enterprise B2B procurement. For high-volume deployment orders, please contact our sales team directly to negotiate custom bulk discounts that will significantly optimize your IT infrastructure budget. By admin on 2026-05-20
Q: We run a mix of Cisco Nexus and Arista 7050X series in our DC. Will these 40G QSFP+ transceivers work seamlessly without throwing third-party warning logs? By M***n on 2026-01-02

A: Absolutely. The LQ-M3140-L24C is 100% MSA compliant and strictly coded for cross-platform equipment compatibility. Network engineers regularly run multi-brand switch compatibility tests (including Cisco, Arista, and Juniper) with this module, confirming instant plug-and-play recognition and zero third-party lock-out errors. By admin on 2026-01-02
Q: Can I use OM4 multimode fiber with this module, or does the MPO interface strictly require single-mode fiber (SMF) for the 20km reach? By K***l on 2025-12-04

A: The LQ-M3140-L24C is specifically engineered with a DFB laser designed exclusively for Single Mode Fiber (SMF) to achieve the 20km transmission distance. You must use SMF paired with an MPO APC connector to eliminate reflection losses; multimode fiber (like OM3/OM4) is not supported for this specific PSM4 adaptation type. By admin on 2025-12-05
Q: Does this optical module fully comply with industry standard protocols? We need strict adherence for our public sector telecom contracts. By S***h on 2025-10-16

A: Yes, it is fully certified and adheres strictly to both IEEE 802.3ba and 40GBASE-LR4 industry standards. It passes all rigorous compliance testing, making it a safe, scalable, and reliable choice for government and enterprise-grade networking requirements. By admin on 2025-10-16
Q: Are LINK-PP QSFP+ transceivers compatible with Cisco switches? By *** on 2025-09-09

A: Yes, all 40G QSFP+ modules from LINK-PP are 100% Cisco compatible and tested for seamless integration. By Mr. happy cai on 2025-10-12
Q: What is FEC (Forward Error Correction)? By M***l on 2025-05-05

A: FEC (Forward Error Correction) is an error correction technique todetect and correct a limited number of errors in transmitted data without the need for retransmission. It works by adding redundant bits to a bitstream to help the decoder odetect and correct some transmission errors without the need for retransmission. This function needs to be turned on by the transmission device. By admin on 2025-05-05

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S***r

Venezuela

Verified Purchase

5 .0

2026-03-25

Installed for a 40Gbps core switch upgrade. The PIN receiver sensitivity is outstanding.

163 Helpful vote Comments

S***e

Costa Rica

Verified Purchase

5 .0

2026-03-24

Incredible value for long range qsfp modules. Saved our IT budget on upgrades.

128 Helpful vote Comments

M***n

Singapore

Verified Purchase

5 .0

2026-01-11

Perfect for upgrading our campus optical network. Pushed 40G traffic over a 16km single-mode fiber link with IEEE 802.3ba compliance. The angled MPO connector completely eliminated reflection losses. Will order more!

71 Helpful vote Comments

C***l

Austria

Verified Purchase

5 .0

2026-01-08

Deployed 50 units of these cisco compatible 40gbase-lr4 optics for data center interconnects. The DOM feature tracks laser bias and temp flawlessly. Absolutely unbeatable total cost of ownership for our procurement.

116 Helpful vote Comments

D***r

Singapore

Verified Purchase

5 .0

2025-12-29

Perfect 40g module for home 10G NAS.

38 Helpful vote Comments

B***s

Brazil

Verified Purchase

5 .0

2025-12-25

Tested on Juniper and Arista switches, this OEM compatible qsfp module synced instantly.

69 Helpful vote Comments

M***n

Peru

Verified Purchase

5 .0

2025-12-17

Solid 1310nm 20km optical optic, highly recommended!

117 Helpful vote Comments

S***n

United States

Verified Purchase

5 .0

2025-12-08

40gbe mpo connector fits tight and secure.

130 Helpful vote Comments

E***s

Greece

Verified Purchase

4 .0

2025-11-27

Shipping delayed by two days. Otherwise, this 40gbase-lr4 module handles 20km perfectly.

99 Helpful vote Comments

C***n

Ethiopia

Verified Purchase

5 .0

2025-09-05

MSA compliant and very reliable transceiver. (b^_^)b

187 Helpful vote Comments

M***e

Portugal

Verified Purchase

5 .0

2025-08-08

Best cheap 40g datacenter optics I’ve bought.

31 Helpful vote Comments

S***n

Bangladesh

Verified Purchase

5 .0

2025-07-25

Worked great and saved almost 90%

67 Helpful vote Comments

H***r

Brazil

Verified Purchase

5 .0

2025-07-22

Excellent experience! Part ordered exactly as described, works perfectly, and was delivered the same day. Will use Link-PP again!

73 Helpful vote Comments

P***h

Macao

Verified Purchase

5 .0

2025-07-10

Quick and reliable service at a competitive price

32 Helpful vote Comments

S***r

Macao

Verified Purchase

5 .0

2025-05-22

Ran a stress test on this 40g qsfp+ 1310nm transceiver for a multi-brand switch compatibility test. Arista, Dell, and Cisco recognized it immediately. Full 40Gbps throughput over 20km SMF, zero CRC errors!

41 Helpful vote Comments

B***s

United States

Verified Purchase

5 .0

2025-05-12

I have placed many order here. They always provide high quality products and sweet service for you. Great shopping experience.

67 Helpful vote Comments

B***s

South Africa

Verified Purchase

5 .0

2025-05-12

Smooth DOM monitoring on our core switches.

144 Helpful vote Comments

M***z

Panama

Verified Purchase

5 .0

2025-05-08

Upgraded our outdoor cabinet links. The 0-70°C temp handles the summer heat effortlessly. ☀️

31 Helpful vote Comments

C***d

Belgium

Verified Purchase

5 .0

2025-05-06

Quick delivery and product as advertised.

47 Helpful vote Comments

C***n

Russian Federation

Verified Purchase

5 .0

2025-04-10

The MPO interface is high quality. Perfect for our PSM4 parallel networking setup.

167 Helpful vote Comments

W***z

Malaysia

Verified Purchase

5 .0

2025-03-28

Zero packet loss on base station backhaul.

178 Helpful vote Comments

J***s

Sweden

Verified Purchase

5 .0

2025-02-20

Flawless single mode fiber connection over 15km. ⚡

181 Helpful vote Comments

H***s

United States

Verified Purchase

5 .0

2025-01-17

The live chat function was helpful in selecting the compatible 10/25/40G Transceiver Modules module which was later purchased through l-p.com. Staff is very well informed and articulate. They are always reliable, quick, and accurate - very happy with l-p.com!

43 Helpful vote Comments

M***o

Bangladesh

Verified Purchase

5 .0

2025-01-13

The product was just as described and arrive very quickly.

85 Helpful vote Comments

D***n

Netherlands

Verified Purchase

5 .0

2024-12-13

Works great for our campus fiber network.

141 Helpful vote Comments

B***o

Hong Kong

Verified Purchase

5 .0

2024-11-20

Overall, my shopping experience with l-p.com has been wonderful

86 Helpful vote Comments

R***n

Israel

Verified Purchase

5 .0

2024-10-24

Use this one in my device, never had a problem. Buy more for test & spare use

82 Helpful vote Comments

J***a

France

Verified Purchase

5 .0

2024-10-22

Excellent long-haul solution! Installed this 40G LR4 module in a remote outdoor cabinet. Despite the harsh 65°C environment, the DFB laser maintains a crystal-clear 1310nm signal for our base station backhaul.

184 Helpful vote Comments

D***n

Bolivia

Verified Purchase

5 .0

2024-10-15

Plug and play cisco compatible 40gbase-lr4 module. (^-^)

66 Helpful vote Comments

D***z

Sweden

Verified Purchase

5 .0