I’m looking to outfit an entire server room and need about 200 of these 40G QSFP+ modules. Do you offer tier pricing or wholesale discounts for bulk corporate procurement?

Yes, we provide aggressive volume discounts for B2B clients! For a bulk purchase of 200 units, you will receive a significant price reduction compared to the single-unit cost shown. Reach out to our sales engineering team directly for a customized quote.

We use a mix of Cisco Nexus and Arista switches in our data center. Will this 40GBASE-LR4 module interoperate seamlessly without throwing third-party warning logs?

Absolutely. This QSFP+ module is thoroughly tested for OEM compatibility across major brands like Cisco, Arista, and Juniper. It's entirely plug-and-play and will integrate smoothly without triggering unsupported transceiver warnings.

We are on a tight schedule for a campus fiber network rollout next month. Are these 1310nm 10km modules in stock, and what’s your typical delivery cycle to Europe or the US?

We maintain a large, stable supply chain and keep extensive inventory of these standard 40G LR4 optics. Orders are typically processed within 24 hours, and expedited global shipping usually takes just 2 to 5 business days, ensuring you meet critical project deadlines.

Is this transceiver fully compliant with IEEE 802.3ba and standard MSA specifications? I need to ensure it meets strict industry compliance for our federal contracts.

Yes, the LQ-CW40-LR4C strictly complies with the IEEE 802.3ba 40GBASE-LR4 standard and all QSFP+ MSA specifications. It is also fully RoHS compliant, fulfilling the rigorous regulatory and operational demands of global enterprise and government deployments.

Breadcrumb: Home; Products; Optics Transceivers | SFP Modules; 10/25/40G/100G Transceiver Modules; 40G QSFP+; 219647

Click to open expanded view

BladeSystem 720190-B21 Compatible LINK-PP 40G QSFP+ 1310nm 10km Duplex LC DOM SMF Optical Transceiver Module

Name: BladeSystem 720190-B21 Compatible LINK-PP 40G QSFP+ 1310nm 10km Duplex LC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 219647
Price: 128.14 USD
Availability: InStock
Rating: 4.9 (30 reviews)

# 219647

Product: BladeSystem 720190-B21 Compatible LINK-PP 40G QSFP+ 1310nm 10km Duplex LC DOM SMF Optical Transceiver Module
SKU: 219647
P/N: LQ-CW40-LR4C
Price: $ 149
Stock: 1368 in Stock
Sold: 2.7K
Product URL: https://www.l-p.com/products/482494.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

30 Reviews

4 Questions

Request Stock

2.7K Sold

$ 149

Free shipping over $600, If you need a more favorable price, please contact us directly.

Qty (pcs) :

Unit Price :

$ 149

100

$ 141.55

1000

$ 137.08

3000

$ 132.61

6000

$ 128.14

Manufacture: LINK-PP

P/N: LQ-CW40-LR4C

Compatible:: Cisco; LINK-PP; APRESIA; Alcatel-Lucent; Arista; Avago; BladeSystem; Brocade; Check Point; Cisco Meraki; D-Link; Dell; EdgeCore; Extreme; F5 Networks; FS; Fortinet; Generic; Gigamon; H3C; HPE Aruba; HPE H3C; HW; IBM; Ixia; Juniper; MRV; NVIDIA/Mellanox; Palo Alto

Compatible P/N:: 720190-B21 | 10km

Shipping:

To Be Negotiated

Free Shipping

Can't deliver

to United States via {{now_chooseship?now_chooseship.name:''}}

Estimated delivery time : {{now_chooseship?now_chooseship.datemin:''}}-{{now_chooseship?now_chooseship.datemax:''}} days. See details

5-Year Warranty 30-Day Returns 30-Day Exchange

Stock:

{{parseInt(detail_data.left_num) ? detail_data.left_num +' in Stock' :detail_data.zeroStockOrder==0?'Out of Stock':'Available'}} .

Quantity:

( Min. Order {{detail_data.prodInfo.minimum_ordered_quantity}} )

undeliverable

Total Price:

{{ detail_data.displayed_price.unit_prefix }} {{ detail_data.displayed_price.original_total_price }} ( {{ detail_data.displayed_price.rate_of_discount }}% OFF ) {{detail_data.displayed_price.ex_sell_type}}

Add to wish

Specifications

Specification
Videos
Matching Products
Download
Q&A
Customer Reviews

BladeSystem 720190-B21 Compatible LINK-PP 40G QSFP+ Specifications

The BladeSystem 720190-B21 Compatible LINK-PP module is a premium 40GBASE-LR4 QSFP+ optical transceiver designed for high-speed data center networks. This commercial-grade 40G Ethernet module operates over single-mode fiber (SMF), delivering exceptional bandwidth and long-range reliability. Featuring a hot-swappable QSFP+ form factor, it ensures seamless integration, minimal latency, and maximum performance for enterprise-level telecommunication upgrades.

BladeSystem Part Number	720190-B21	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
Protocols	OTN OTU3, 40G Ethernet, Fiber Channel, SATA/SAS3, MSA Compliant	Operating Temperature Range	0°C to +70°C

Videos

Matching Products

Pictures

ID#

Description

Price

Stock

Add to Cart

Download

Product Drawing

PDF
LQ-CW40-LR4C.pdf

Questions & Answers
Ask a Question

No data

Q: I’m looking to outfit an entire server room and need about 200 of these 40G QSFP+ modules. Do you offer tier pricing or wholesale discounts for bulk corporate procurement? By J***t on 2026-04-09

A: Yes, we provide aggressive volume discounts for B2B clients! For a bulk purchase of 200 units, you will receive a significant price reduction compared to the single-unit cost shown. Reach out to our sales engineering team directly for a customized quote. By admin on 2026-04-09
Q: We use a mix of Cisco Nexus and Arista switches in our data center. Will this 40GBASE-LR4 module interoperate seamlessly without throwing third-party warning logs? By J***n on 2026-03-17

A: Absolutely. This QSFP+ module is thoroughly tested for OEM compatibility across major brands like Cisco, Arista, and Juniper. It's entirely plug-and-play and will integrate smoothly without triggering unsupported transceiver warnings. By admin on 2026-03-17
Q: We are on a tight schedule for a campus fiber network rollout next month. Are these 1310nm 10km modules in stock, and what’s your typical delivery cycle to Europe or the US? By M***l on 2026-02-10

A: We maintain a large, stable supply chain and keep extensive inventory of these standard 40G LR4 optics. Orders are typically processed within 24 hours, and expedited global shipping usually takes just 2 to 5 business days, ensuring you meet critical project deadlines. By admin on 2026-02-10
Q: Is this transceiver fully compliant with IEEE 802.3ba and standard MSA specifications? I need to ensure it meets strict industry compliance for our federal contracts. By T***l on 2025-10-25

A: Yes, the LQ-CW40-LR4C strictly complies with the IEEE 802.3ba 40GBASE-LR4 standard and all QSFP+ MSA specifications. It is also fully RoHS compliant, fulfilling the rigorous regulatory and operational demands of global enterprise and government deployments. By admin on 2025-10-25

Customer Reviews
Write a Review

{{stardata.star}}

{{comment.count}} reviews
5 Stars

{{comment.star5}}%

4 Stars

{{comment.star4}}%

3 Stars

{{comment.star3}}%

2 Stars

{{comment.star2}}%

1 Star

{{comment.star1}}%

All Reviews ({{comment.star_num?comment.star_num:comment.count}})

All Reviews

5 stars only

4 stars only

3 stars only

2 stars only

1 star only
Reviews with Pictures ( {{comment.pic_comment}} )
See All Reviews

No data

J***z

Finland

Verified Purchase

5 .0

2026-06-04

Exact 40G QSFP+ specs as advertised.

95 Helpful vote Comments

C***s

United Kingdom

Verified Purchase

5 .0

2026-06-03

Excellent fiber transceiver for enterprise routing.

169 Helpful vote Comments

S***l

Hong Kong

Verified Purchase

5 .0

2026-05-23

Highly reliable Duplex LC 40G module.

180 Helpful vote Comments

J***s

Switzerland

Verified Purchase

5 .0

2026-02-01

Smooth 40Gbps throughput. Love the plug-and-play duplex LC interface for our NAS setup.

143 Helpful vote Comments

C***n

Denmark

Verified Purchase

5 .0

2025-10-25

Flawless 40GBASE-LR4 QSFP+ module.

203 Helpful vote Comments

C***g

Colombia

Verified Purchase

5 .0

2025-10-20

Top-tier 40G SMF optic. The 1271-1331nm CWDM4 tech is super efficient for cabling.

188 Helpful vote Comments

N***s

Argentina

Verified Purchase

5 .0

2025-09-02

Upgrading spine-to-leaf links was a breeze. These duplex LC transceivers run cool under 70°C limits. The DDM monitoring is incredibly precise across our Juniper switches. Highly recommend for B2B procurement.

159 Helpful vote Comments

C***s

Dominican Republic

Verified Purchase

5 .0

2025-08-14

Passed all loopback tests. Excellent 10km transmission distance for our business network.

123 Helpful vote Comments

J***s

Malaysia

Verified Purchase

5 .0

2025-07-17

Excellent wholesale pricing. This 40G QSFP+ 10km module saved our IT budget massively.

148 Helpful vote Comments

B***n

United States

Verified Purchase

5 .0

2025-07-09

Good budget 40G optic for NAS.

130 Helpful vote Comments

S***g

Ethiopia

Verified Purchase

5 .0

2025-06-25

Perfect for our indoor cabinet. 0-70C temp range is plenty for our AC-cooled room.

36 Helpful vote Comments

R***s

Argentina

Verified Purchase

4 .0

2025-06-05

Box arrived squished, but this Cisco compatible 40G transceiver works perfectly in our rack.

200 Helpful vote Comments

D***l

Malaysia

Verified Purchase

5 .0

2025-05-21

Solid 10km transceiver for SMF.

129 Helpful vote Comments

E***g

Italy

Verified Purchase

4 .0

2025-04-07

Shipping delayed by two days. Still, a solid 10km SMF LC optic with accurate DOM.

27 Helpful vote Comments

R***d

Taiwan, Province of China

Verified Purchase

5 .0

2025-02-15

I am happy that I was able to find reasonably priced Optical Transceiver Module in Link-pp.

109 Helpful vote Comments

K***e

Portugal

Verified Purchase

5 .0

2025-02-06

Reliable 40G QSFP+ module for single-mode fiber. Linked right up with our HPE switches!

143 Helpful vote Comments

M***l

Mexico

Verified Purchase

5 .0

2025-01-25

Tested these 40G QSFP+ modules for our campus fiber network upgrade. Flawless Arista compatibility and the CWDM4 wavelengths maintain stable 10km links. Great cost-effective solution for massive datacenter deployments!

57 Helpful vote Comments

M***s

Dominican Republic

Verified Purchase

5 .0

2025-01-09

Solid OEM compatible 1310nm QSFP+ for our base station backhaul. The DFB transmitters are rock stable. Easily handles intensive 40G Ethernet traffic without overheating in our indoor server cabinets.

47 Helpful vote Comments

M***R

United States

Verified Purchase

5 .0

2024-12-31

Very Fast shopping process.Everything went well and I'll order again.

50 Helpful vote Comments

F***i

United States

Verified Purchase

5 .0

2024-10-16

LINK-PP has an easy to browse website with great prices and excellent customer service. Every interaction that I have had with LINK-PP has been smooth and hassle free. Would definitely reccomend to friends and family!

48 Helpful vote Comments

C***d

United States

Verified Purchase

5 .0

2024-10-11

Very happy with the speed of delivery, unlike others, and accuracy of order. Will buy from them again.

32 Helpful vote Comments

E***z

Hong Kong

Verified Purchase

5 .0

2024-09-30

I just placed an order with 50 pcs 10G Sfp Cage. You guys shipped them to me in the same day. Actually it's really urgent for me and I appreciate your Fast shipment. Will order it continually for my projects.

82 Helpful vote Comments

C***n

United States

Verified Purchase

5 .0

2024-08-11

No issues. Everything arrived on time as advertised.

49 Helpful vote Comments

H***n

United States

Verified Purchase

5 .0

2024-06-15

In these days of web ordering with faceless automation it was a fresh breeze to get a human behind my order. The order was Fast.

63 Helpful vote Comments

S***g

Russian Federation

Verified Purchase

5 .0

2023-10-05

Great price, great product!

52 Helpful vote Comments

V***a

United Kingdom

Verified Purchase

5 .0

2023-09-15

This is my second purchase from Link-pp and I have been happy with their service, price and speedy delivery. I would buy from them again.

59 Helpful vote Comments

K***i

Ireland

Verified Purchase

5 .0

2023-08-02

I'm very happy with my transaction and purchase. The Optical Transceiver Module works with no issue. I would definitely recommend this company for customer service and speed. I will be purchasing from them again in the future.

99 Helpful vote Comments

U***n

Cambodia

Verified Purchase

5 .0

2023-03-02

I had bought many Optical Transceiver Modules from them. They worked well as always.

60 Helpful vote Comments

L***n

Iran, Islamic Republic of

Verified Purchase

5 .0