Will this module survive in unconditioned outdoor cabinets? Our summer temps can hit 65°C and winters drop below -20°C.

Yes! Unlike standard indoor modules, the LQ-CW40-LR4I is a hardened, true industrial-grade transceiver. It is purpose-built for extreme operating temperatures ranging from -40°C all the way up to +85°C, making it perfect for harsh setups like trackside railway systems, cell tower enclosures, and heavy manufacturing plants.

Our telecom project is on a tight schedule. Are these industrial 40GBASE-LR4 transceivers currently in stock, and what does the delivery cycle look like?

Supply chain stability is one of our strong suits. The LQ-CW40-LR4I is fully stocked with a handling time of just 2 business day. Standard transit times to North America and European facilities are typically between 2 to 5 days.

Does this transceiver comply with standard 40G Ethernet protocols for our industry deployment?

Definitely. It strictly complies with industry standards including 40G Ethernet, OTN OTU3, Fiber Channel, and SATA/SAS3. It also operates right on the standardized CWDM grid (1271nm, 1291nm, 1311nm, 1331nm) ensuring total compliance with your existing optical infrastructure.

Hi, will this 40G QSFP+ LR4 module work seamlessly if I have a mix of Cisco and Arista switches in my data center?

Absolutely! The LQ-CW40-LR4I is fully MSA compliant and rigorously tested for cross-platform interoperability. It operates flawlessly as a plug-and-play component across Cisco, Arista, Juniper, Dell, and other major OEM core routers, making multi-vendor network integration painless.

We're looking to do a batch deployment for our campus fiber network. Can we get a price break for ordering 100+ units?

Yes, we provide tiered volume pricing for enterprise rollouts. For orders of 100 units, the price will be very nice. Please reach out to our B2B procurement team or use our live chat to arrange your bulk discount and net terms.

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Extreme QSFP-LR4-40G-I Compatible LINK-PP 40G QSFP+ LR4 1310nm 10km DOM Duplex LC SMF Optical Transceiver Module (Industrial)

Name: Extreme QSFP-LR4-40G-I Compatible LINK-PP 40G QSFP+ LR4 1310nm 10km DOM Duplex LC SMF Optical Transceiver Module (Industrial)
Brand: LINK-PP
SKU: 219553
Price: 130.72 USD
Availability: InStock
Rating: 5 (29 reviews)

# 219553

Product: Extreme QSFP-LR4-40G-I Compatible LINK-PP 40G QSFP+ LR4 1310nm 10km DOM Duplex LC SMF Optical Transceiver Module (Industrial)
SKU: 219553
P/N: LQ-CW40-LR4I
Price: $ 152
Stock: 1132 in Stock
Sold: 737
Product URL: https://www.l-p.com/products/494671.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-CW40-LR4I

Compatible:: Cisco; LINK-PP; Arista; Brocade; DELL; Extreme; FS; Generic; H3C; Juniper

Compatible P/N:: 10320 | 10km; 40GB-LR4-QSFP | 10km; QSFP-LR4-40G-I | 10km; QSFP-ELR4-40G | 20km; 10335 | 40km; 40GB-ER4-QSFP | 40km

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Extreme QSFP-LR4-40G-I Compatible LINK-PP 40G QSFP+ Specifications

The Extreme QSFP-LR4-40G-I Compatible LINK-PP industrial transceiver delivers outstanding 40GBASE-LR4 Ethernet connectivity. Engineered specifically for harsh environments, this robust 40G QSFP+ optical module operates flawlessly between extreme temperatures of minus forty and eighty-five degrees Celsius. With advanced DFB lasers, it enables reliable single-mode fiber networking up to 10km, meeting demanding enterprise communication requirements.

Extreme Part Number	QSFP-LR4-40G-I	Vendor Name	LINK-PP
Form Factor	QSFP+	Max Data Rate	40Gbps
Wavelength	1271nm, 1291nm, 1311nm, 1331nm	Max Cable Distance	10km
Connector	Duplex LC	Media	SMF
Transmitter Type	DFB	Receiver Type	PIN
Power Consumption	≤3.3W	Protocols	OTN OTU3, 40G Ethernet, Fiber Channel, SATA/SAS3, MSA Compliant
Host FEC	Supported	Operating Temperature Range	-40°C to +85°C

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Q: Will this module survive in unconditioned outdoor cabinets? Our summer temps can hit 65°C and winters drop below -20°C. By W***l on 2026-04-30

A: Yes! Unlike standard indoor modules, the LQ-CW40-LR4I is a hardened, true industrial-grade transceiver. It is purpose-built for extreme operating temperatures ranging from -40°C all the way up to +85°C, making it perfect for harsh setups like trackside railway systems, cell tower enclosures, and heavy manufacturing plants. By admin on 2026-05-01
Q: Our telecom project is on a tight schedule. Are these industrial 40GBASE-LR4 transceivers currently in stock, and what does the delivery cycle look like? By S***e on 2026-04-01

A: Supply chain stability is one of our strong suits. The LQ-CW40-LR4I is fully stocked with a handling time of just 2 business day. Standard transit times to North America and European facilities are typically between 2 to 5 days. By admin on 2026-04-01
Q: Does this transceiver comply with standard 40G Ethernet protocols for our industry deployment? By K***h on 2026-03-18

A: Definitely. It strictly complies with industry standards including 40G Ethernet, OTN OTU3, Fiber Channel, and SATA/SAS3. It also operates right on the standardized CWDM grid (1271nm, 1291nm, 1311nm, 1331nm) ensuring total compliance with your existing optical infrastructure. By admin on 2026-03-19
Q: Hi, will this 40G QSFP+ LR4 module work seamlessly if I have a mix of Cisco and Arista switches in my data center? By B***s on 2025-11-23

A: Absolutely! The LQ-CW40-LR4I is fully MSA compliant and rigorously tested for cross-platform interoperability. It operates flawlessly as a plug-and-play component across Cisco, Arista, Juniper, Dell, and other major OEM core routers, making multi-vendor network integration painless. By admin on 2025-11-24
Q: We're looking to do a batch deployment for our campus fiber network. Can we get a price break for ordering 100+ units? By C***t on 2025-10-01

A: Yes, we provide tiered volume pricing for enterprise rollouts. For orders of 100 units, the price will be very nice. Please reach out to our B2B procurement team or use our live chat to arrange your bulk discount and net terms. By admin on 2025-10-01

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S***s

Viet Nam

Verified Purchase

4 .0

2026-05-01

The 40G QSFP+ LR4 works perfectly, but the outer box was slightly crushed upon arrival.

108 Helpful vote Comments

J***e

Panama

Verified Purchase

5 .0

2026-04-13

Fast shipping and the 40G optical module performs exactly as the datasheet promised! (ﾉ◕ヮ◕)ﾉ

45 Helpful vote Comments

C***n

Viet Nam

Verified Purchase

5 .0

2026-03-03

Perfect for harsh environments. This industrial transceiver handles extreme heat without dropping links.

36 Helpful vote Comments

B***t

Russian Federation

Verified Purchase

5 .0

2026-02-14

Juniper switches accepted this 40Gbps transceiver without any warnings. Great DOM features too!

150 Helpful vote Comments

J***s

Viet Nam

Verified Purchase

5 .0

2026-01-15

Excellent 40G QSFP+ LR4 module, zero errors!

180 Helpful vote Comments

S***n

Finland

Verified Purchase

5 .0

2026-01-05

Works flawlessly with my Cisco gear.

42 Helpful vote Comments

R***z

Mexico

Verified Purchase

5 .0

2025-10-01

Batch deployed these industrial 40G QSFP+ LR4 transceivers for our base station backhaul. Flawless 10km SMF links. The DDM output is highly accurate across extreme outdoor cabinet temps (-40°C). Highly recommended for telecom!

134 Helpful vote Comments

L***n

Canada

Verified Purchase

5 .0

2025-09-11

Rock solid industrial transceiver for outdoor cabinets.

61 Helpful vote Comments

M***e

Brazil

Verified Purchase

5 .0

2025-08-14

Fully compliant MSA 40G optical module.

204 Helpful vote Comments

E***s

Spain

Verified Purchase

5 .0

2025-05-28

Solid 40GBASE-LR4 performance for our 10km base station backhaul. Will buy more soon.

163 Helpful vote Comments

S***l

Indonesia

Verified Purchase

5 .0

2025-04-25

Installed in a Dell switch for our NAS array. Superb 10km single-mode fiber link.

193 Helpful vote Comments

P***e

Viet Nam

Verified Purchase

5 .0

2025-04-17

DDM monitoring is accurate and super helpful.

20 Helpful vote Comments

M***l

Austria

Verified Purchase

5 .0

2025-04-05

Great value for 40Gbps single-mode networking!

115 Helpful vote Comments

R***n

France

Verified Purchase

5 .0

2025-01-29

Link-pp is very professional and strive to meet my needs at any time!

47 Helpful vote Comments

M***l

Turkey

Verified Purchase

5 .0

2025-01-18

The item works well with our systems and was easy to order and Fast delivery as promised.

48 Helpful vote Comments

M***r

Russian Federation

Verified Purchase

5 .0

2025-01-10

Tested this 40G QSFP+ single-mode fiber transceiver for a demanding data center interconnect. The DFB laser handles 1271-1331nm wavelengths perfectly over OS2. Zero packet loss over 8km, great OEM compatibility! (ง •_•)ง

125 Helpful vote Comments

V***d

Italy

Verified Purchase

5 .0

2024-05-14

Track is tracked. Excellent Optical Transceiver Modules for such a price, cope with their task

49 Helpful vote Comments

M***i

Morocco

Verified Purchase

5 .0