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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H3C QSFP-SR4-40G-I Compatible LINK-PP 40G QSFP+ 850nm 300m MPO-12 DOM MMF Optical Transceiver Module (Industrial)

Name: H3C QSFP-SR4-40G-I Compatible LINK-PP 40G QSFP+ 850nm 300m MPO-12 DOM MMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 221459
Price: 73.1 USD
Availability: InStock
Rating: 5 (22 reviews)

# 221459

Product: H3C QSFP-SR4-40G-I Compatible LINK-PP 40G QSFP+ 850nm 300m MPO-12 DOM MMF Optical Transceiver Module (Industrial)
SKU: 221459
P/N: LQ-M8540-SR4I
Price: $ 85
Stock: 675 in Stock
Sold: 183
Product URL: https://www.l-p.com/products/494771.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

22 Reviews

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$ 85

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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:: QSFP-40G-SR4-MM850 | 300m; QSFP-SR4-40G-I | 300m; QSFP-40G-LR4-PSM1310 | 10km

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H3C QSFP-SR4-40G-I Compatible LINK-PP 40G QSFP+ Specifications

The H3C 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.

H3C 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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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!

172 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

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

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.

39 Helpful vote Comments

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.

209 Helpful vote Comments

S***s

Indonesia

Verified Purchase

5 .0

2025-12-02

Cisco compatible QSFP+ synced instantly. Highly recommend.

135 Helpful vote Comments

D***z

Brazil

Verified Purchase

5 .0

2025-07-21

DDM monitoring works great for our bulk deployment.

73 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

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.

47 Helpful vote Comments

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!

89 Helpful vote Comments

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.

51 Helpful vote Comments

L***g

Brazil

Verified Purchase

5 .0

2024-10-27

fantastic! the part work perfectly and shipped extremely Fast!

109 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***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

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.

95 Helpful vote Comments

W***u

Indonesia

Verified Purchase

5 .0

2024-02-04

Good customer service, happy with the service.

55 Helpful vote Comments

N***o

Germany

Verified Purchase

5 .0