Does this optic support OTU4 protocols for our telecom optical transport network, or just standard 100G Ethernet?

It is highly versatile. Besides being fully compliant with 100GBASE-ER4 Ethernet standards, it supports standard OTN OTU4 data rates, making it perfect for both enterprise data center interconnects (DCI) and long-haul telecom transport network applications.

We are rolling out a regional ISP upgrade and need about 60 of these 100G LAN-WDM modules. Do you offer bulk discounts?

Absolutely! For large-scale B2B procurements of our 100G QSFP28 40km transceivers, please contact our B2B sales team. We provide tiered volume pricing and dedicated procurement support for enterprise and ISP clients.

We plan to install these in unventilated outdoor telecom cabinets. Do you have an industrial wide-temperature version of this 100G optic?

This specific module is designed for standard commercial operating temperatures (0°C to 70°C). However, we do offer an industrial-grade version (-40°C to 85°C) for this exact 1310nm 40km spec. Please check our store or contact support directly for the industrial SKU.

Can I use multimode fiber for a quick test in the lab, or is this strictly for single-mode?

This 1310nm LAN-WDM transceiver is designed exclusively for Single Mode Fiber (SMF) with a Duplex LC connector. To prevent receiver saturation and hardware damage on short test runs, we strongly recommend using OS2 SMF cable along with appropriate optical attenuators (usually 5dB to 10dB for lab testing).

Will this 100G QSFP28 40km module work with our mix of Cisco Nexus and Arista datacenter switches?

Yes, these extended-reach transceivers are strictly tested for OEM compatibility. They will plug and play seamlessly with Cisco, Arista, Juniper, Ubiquiti, and other major switch brands right out of the box without any vendor lock-in issues.

Breadcrumb: Home; Products; Optics Transceivers | SFP Modules; 10/25/40G/100G Transceiver Modules; 100G QSFP28/SFP-DD; 217067

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Extreme 100G-ER4LT-QSFP40KM Compatible LINK-PP 100G QSFP28 LAN-WDM 1310nm 40km Duplex LC DDM SMF Optical Transceiver Module

Name: Extreme 100G-ER4LT-QSFP40KM Compatible LINK-PP 100G QSFP28 LAN-WDM 1310nm 40km Duplex LC DDM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 217067
Price: 1210 USD
Availability: InStock
Rating: 5 (29 reviews)

# 217067

Product: Extreme 100G-ER4LT-QSFP40KM Compatible LINK-PP 100G QSFP28 LAN-WDM 1310nm 40km Duplex LC DDM SMF Optical Transceiver Module
SKU: 217067
P/N: LQ-LW100-ER4C
Price: $ 1,375
Stock: 8052 in Stock
Sold: 1.9K
Product URL: https://www.l-p.com/products/491544.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

29 Reviews

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Manufacture: LINK-PP

P/N: LQ-LW100-ER4C

Compatible:: Cisco; LINK-PP; Alcatel-Lucent; Allied Telesis; Arista; Avago; Brocade; Check Point; Chelsio; Ciena; D-Link; Dell; Edge-Core; Extreme; F5 Networks; FS; Fortinet; Generic; H3C; HPE Aruba; HW; Intel; Juniper; MRV; Mikrotik; NVIDIA/Mellanox; Palo Alto

Compatible P/N:: 100G-LR4-QSFP10KM | 10km; 100G-QSFP28-LR4-10KM | 10km; 100G-QSFP28-LR4-I | 10km; QSFP-4W20-100G-I | 20km; 100G-ER4LT-QSFP40KM | 40km; QSFP-4W40-100G-I | 40km; QSFP-ZR4-100G-I | 80km; QSFP-EZR4-100G | 100km

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Extreme 100G-ER4LT-QSFP40KM Compatible LINK-PP 100G QSFP28 Specifications

The Extreme 100G-ER4LT-QSFP40KM Compatible LINK-PP module is a high-performance 100G QSFP28 ER4 optical transceiver engineered for long-haul single-mode fiber communications. Operating over a LAN-WDM multiplexed grid across four channels, it strictly complies with QSFP28 MSA, IEEE 802.3ba 100GBASE-ER4, and OTN OTU4 standards to ensure robust 100Gbps transmission up to 40km with integrated DDM capabilities.

Extreme Part Number	100G-ER4LT-QSFP40KM	Vendor Name	LINK-PP
Form Factor	QSFP28	Max Data Rate	111.81Gbps
Wavelength	1295.56nm, 1300.05nm, 1304.58nm and 1309.14nm	Max Cable Distance	40km
Connector	Duplex LC	Media	SMF
Transmitter Type	EML	Receiver Type	APD
DDM/DOM	Supported	Operating Temperature Range	0°C to +70°C
Modulation (Electrical)	4x 25G-NRZ	Modulation (Optical)	4x 25G-NRZ
Protocols	QSFP28 MSA, SFF-8636, IEEE 802.3bm, CAUI-4	Warranty	5 Years

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Q: Does this optic support OTU4 protocols for our telecom optical transport network, or just standard 100G Ethernet? By B***s on 2026-06-01

A: It is highly versatile. Besides being fully compliant with 100GBASE-ER4 Ethernet standards, it supports standard OTN OTU4 data rates, making it perfect for both enterprise data center interconnects (DCI) and long-haul telecom transport network applications. By admin on 2026-06-01
Q: We are rolling out a regional ISP upgrade and need about 60 of these 100G LAN-WDM modules. Do you offer bulk discounts? By N***n on 2026-04-10

A: Absolutely! For large-scale B2B procurements of our 100G QSFP28 40km transceivers, please contact our B2B sales team. We provide tiered volume pricing and dedicated procurement support for enterprise and ISP clients. By admin on 2026-04-10
Q: We plan to install these in unventilated outdoor telecom cabinets. Do you have an industrial wide-temperature version of this 100G optic? By T***s on 2025-06-25

A: This specific module is designed for standard commercial operating temperatures (0°C to 70°C). However, we do offer an industrial-grade version (-40°C to 85°C) for this exact 1310nm 40km spec. Please check our store or contact support directly for the industrial SKU. By admin on 2025-06-25
Q: Can I use multimode fiber for a quick test in the lab, or is this strictly for single-mode? By J***k on 2025-06-12

A: This 1310nm LAN-WDM transceiver is designed exclusively for Single Mode Fiber (SMF) with a Duplex LC connector. To prevent receiver saturation and hardware damage on short test runs, we strongly recommend using OS2 SMF cable along with appropriate optical attenuators (usually 5dB to 10dB for lab testing). By admin on 2025-06-12
Q: Will this 100G QSFP28 40km module work with our mix of Cisco Nexus and Arista datacenter switches? By M***s on 2025-02-15

A: Yes, these extended-reach transceivers are strictly tested for OEM compatibility. They will plug and play seamlessly with Cisco, Arista, Juniper, Ubiquiti, and other major switch brands right out of the box without any vendor lock-in issues. By admin on 2025-02-15

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K***r

Ecuador

Verified Purchase

5 .0

2026-06-17

Solid 100G QSFP28 40km performance for our edge switch deployments. Highly recommend it!

31 Helpful vote Comments

D***n

Dominican Republic

Verified Purchase

5 .0

2026-05-21

Replaced failing optics with these LAN-WDM SMF modules. Instantly recognized by our Mikrotik router.

192 Helpful vote Comments

P***z

Norway

Verified Purchase

5 .0

2026-01-04

We use these QSFP28 100G ER4 transceivers for high-density core routing to remote edge sites. The DDM/DOM tracking is super accurate, and the 40km reach is completely legit.

175 Helpful vote Comments

L***s

Tunisia

Verified Purchase

4 .0

2025-10-05

Box arrived slightly crushed, but the 100G 40km ER4 module performs perfectly.

164 Helpful vote Comments

N***s

Ecuador

Verified Purchase

5 .0

2025-09-27

Great duplex LC 100G module for the price.

154 Helpful vote Comments

J***r

Indonesia

Verified Purchase

5 .0

2025-09-18

Tested this 100G 40km module in our edge telecom site. OEM compatibility is superb.

67 Helpful vote Comments

J***s

Czech Republic

Verified Purchase

5 .0

2025-09-07

Needed reliable 100G extended reach for a regional ISP backbone. These duplex LC transceivers synced instantly with Juniper MX. Flawless 1310nm performance over our 38km single-mode fiber ring.

149 Helpful vote Comments

M***l

Macao

Verified Purchase

5 .0

2025-08-26

Rock solid SMF transceiver for metro distances.

62 Helpful vote Comments

B***z

Brazil

Verified Purchase

5 .0

2025-06-23

Synced instantly with my core HP switch.

100 Helpful vote Comments

N***s

Austria

Verified Purchase

5 .0

2025-06-21

Deployed these 100G QSFP28 LAN-WDM 40km modules for a metro DCI. Pushing 100G over 35km of SMF effortlessly. DDM readouts on our Arista 7060X routers are highly accurate with zero FEC errors!

184 Helpful vote Comments

B***z

Ireland

Verified Purchase

5 .0

2025-06-07

Flawless 40km reach on our fiber network.

99 Helpful vote Comments

M***k

Argentina

Verified Purchase

5 .0

2025-04-24

Great OEM compatibility! These 100G 40km modules worked perfectly in our Ubiquiti aggregate switches.

87 Helpful vote Comments

C***z

Argentina

Verified Purchase

5 .0

2025-01-29

Plug and play 100G link, absolutely fantastic.

85 Helpful vote Comments

L***n

Costa Rica

Verified Purchase

5 .0

2025-01-11

Fast 100G speeds, highly reliable ER4 optics.

74 Helpful vote Comments

V***c

Malaysia

Verified Purchase

5 .0

2023-09-09

Excellent website! Great prices and Fast delivery.

20 Helpful vote Comments

F***o

United States

Verified Purchase

5 .0

2023-02-16

really great services

65 Helpful vote Comments

S***y

Mexico

Verified Purchase

5 .0

2023-02-06

Very easy to find products in product list. Very customer friendly ordering process.

132 Helpful vote Comments

H***r

Iran, Islamic Republic of

Verified Purchase

5 .0

2022-12-22

Personally emailed me to check that I got it. Such great customer service!

52 Helpful vote Comments

L***i

Germany

Verified Purchase

5 .0

2022-12-16

Good site, quick access to optical devices I was looking for, Except that shipping is a little slow.

112 Helpful vote Comments

P***e

United States

Verified Purchase

5 .0

2022-10-31

The staff is knowledgeable and helpful,they helped me to find what i need exactly

41 Helpful vote Comments

T***a

United Arab Emirates

Verified Purchase

5 .0

2022-09-22

GREAT! Exactly what I wanted and expected.

28 Helpful vote Comments

A***i

Canada

Verified Purchase

5 .0

2022-09-20

happy with my order an service provided.

76 Helpful vote Comments

M***m

Netherlands

Verified Purchase

5 .0

2022-08-08

Amazing prices, prompt service, super Fast delivery, huge selection of product.

55 Helpful vote Comments

F***i

Brunei Darussalam

Verified Purchase

5 .0

2022-05-05

Fast service, delivered sooner than promised, at a good price.

49 Helpful vote Comments

L***r

Ireland

Verified Purchase

5 .0

2021-09-10

New to this vendor. So far so good. The product arrived in a very timely manner.

65 Helpful vote Comments

V***v

Belgium

Verified Purchase

5 .0

2021-05-30

Link-pp gives me the best price on brand new electronics along with prompt delivery. I love this store!

34 Helpful vote Comments

S***p

France

Verified Purchase

5 .0

2021-05-04

Fast and easy to find the product I was looking for and no annoying pop up while I filled in the required data.

33 Helpful vote Comments

S***i

United States

Verified Purchase

5 .0

2021-03-06

The overall service was great!

141 Helpful vote Comments

M***i

New Zealand

Verified Purchase

5 .0

2021-02-05

I have ordered three LAN Magnetic Transformer for my project and all those I am getting are reasonably priced and will be delivered next day which is perfect.

51 Helpful vote Comments