Our procurement team is looking to deploy 500+ pieces for a new campus network. Do you guys offer bulk discounts for large rollouts?

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.

We have outdoor cabinets in Texas where summer heat is brutal. Can this module truly handle extreme temperatures without dropping packets?

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.

Do these transceivers fully comply with IEEE 802.3 and SFF-8436 standards? We need them for strict enterprise compliance audits.

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.

We run a mix of Cisco Nexus and Arista switches in our DC. Will these 40G modules communicate smoothly across different OEM brands?

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.

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Extreme QSFP-SR4-40G-I Compatible LINK-PP 40G QSFP+ 850nm 300m MPO-12 DOM MMF Optical Transceiver Module (Industrial)

Name: Extreme QSFP-SR4-40G-I Compatible LINK-PP 40G QSFP+ 850nm 300m MPO-12 DOM MMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 221455
Price: 73.1 USD
Availability: InStock
Rating: 5 (28 reviews)

# 221455

Product: Extreme QSFP-SR4-40G-I Compatible LINK-PP 40G QSFP+ 850nm 300m MPO-12 DOM MMF Optical Transceiver Module (Industrial)
SKU: 221455
P/N: LQ-M8540-SR4I
Price: $ 85
Stock: 597 in Stock
Sold: 245
Product URL: https://www.l-p.com/products/494768.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

28 Reviews

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$ 80.75

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Manufacture: LINK-PP

P/N: LQ-M8540-SR4I

Compatible:: Cisco; LINK-PP; Arista; Brocade; Dell; Extreme; FS; Fortinet; Generic; H3C; HPE Aruba

Compatible P/N:: 40GB-SR4-QSFP | 300m; QSFP-SR4-40G-I | 300m; 10326 | 10km

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Extreme QSFP-SR4-40G-I Compatible LINK-PP 40G QSFP+ Specifications

The Extreme QSFP-SR4-40G-I Compatible LINK-PP module 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.

Extreme Part Number	QSFP-SR4-40G-I	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

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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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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! ✨

120 Helpful vote Comments

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. ⏱️

153 Helpful vote Comments

L***r

Indonesia

Verified Purchase

5 .0

2026-04-09

Flawless 40Gbps speeds for my enterprise NAS. ⚡

40 Helpful vote Comments

S***r

Sweden

Verified Purchase

5 .0

2026-03-14

Solid 850nm VCSEL transceivers for UK data centers.

109 Helpful vote Comments

J***g

Greece

Verified Purchase

5 .0

2026-02-02

Perfect 40GBASE-SR4 300m MMF for campus fiber!

121 Helpful vote Comments

C***r

Dominican Republic

Verified Purchase

5 .0

2026-01-11

Handles -40°C in our outdoor cabinets effortlessly! ❄️

97 Helpful vote Comments

C***z

Italy

Verified Purchase

5 .0

2025-12-03

Cost-effective industrial 40G QSFP+ module, works perfectly.

169 Helpful vote Comments

S***s

Indonesia

Verified Purchase

5 .0

2025-12-02

Cisco compatible QSFP+ synced instantly. Highly recommend.

135 Helpful vote Comments

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.

101 Helpful vote Comments

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.

42 Helpful vote Comments

D***s

Norway

Verified Purchase

5 .0

2025-01-26

Great MMF reach, 300m specs are highly accurate.

195 Helpful vote Comments

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...

11 Helpful vote Comments

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!

45 Helpful vote Comments

J***t

Ukraine

Verified Purchase

5 .0

2024-10-18

Easy MPO-12 plug and play, nice optics.

40 Helpful vote Comments

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.

88 Helpful vote Comments

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.

61 Helpful vote Comments

M***u

Denmark

Verified Purchase

5 .0

2024-08-17

Easy to use website and prompt delivery.

38 Helpful vote Comments

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.

101 Helpful vote Comments

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.

23 Helpful vote Comments

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.

62 Helpful vote Comments

M***o

Philippines

Verified Purchase

5 .0