What key features does the LINK-PP LS-SM554G-40C 4.25G SFP offer?

This compact transceiver brings together 4.25Gbps speed, 1550nm long-wavelength operation, 40km reach on single-mode fiber, a duplex LC connector, and DOM monitoring capability.

Which type of fiber is required for this transceiver?

It is designed to work with single-mode fiber, commonly known as SMF.

How far can this module transmit data?

Under the right optical budget conditions, it supports transmission distances of up to 40km over standard single-mode fiber.

In which applications is this module typically deployed?

It sees frequent use in datacom, telecom, FTTx, wireless networks, WDM systems, carrier Ethernet, and other long-haul optical infrastructure.

We're planning a storage network upgrade requiring around 250 modules. Do you provide bulk discounts or customized OEM labeling?

Absolutely. LINK-PP offers project-based pricing for volume orders, along with OEM/ODM services including customized EEPROM coding, private labels, logo printing, and customized packaging. Simply send us your required quantity and compatible switch models, and we'll prepare a competitive quotation for your project.

Is there an industrial-temperature version available for outdoor cabinets or factory automation applications?

Yes. The LS-SM554G-40C is the commercial-temperature version for standard enterprise environments. If your deployment requires operation in harsh conditions, LINK-PP also offers an industrial-grade version with an operating temperature range of -40°C to +85°C. Please contact our sales team for the recommended industrial model.

Does the LS-SM554G-40C support Digital Optical Monitoring (DOM/DDM), and which Fibre Channel standards does it support?

Yes. The module supports Digital Optical Monitoring (DOM/DDM), allowing real-time monitoring of transmit power, receive power, temperature, supply voltage, and laser bias current. It complies with the SFP MSA, SFF-8472, and supports 1x/2x/4x Fibre Channel operation with data rates up to 4.25Gbps, providing reliable long-term performance for enterprise storage and SAN environments.

Has anyone deployed the LS-SM554G-40C with Cisco MDS, Brocade, IBM, or other Fibre Channel switches? Any compatibility issues?

Yes. The LS-SM554G-40C is manufactured in compliance with the SFP MSA standard and supports OEM-compatible coding. It has been successfully deployed with Cisco MDS, Brocade, IBM, QLogic, Emulex, and many other compatible Fibre Channel platforms. Most switches recognize the module automatically without additional configuration. If you're unsure about your device model, our technical team can verify compatibility before shipment.

Can this module operate over standard OS2 single-mode fiber for the full 40 km distance, and what connector type does it use?

Yes. The LS-SM554G-40C is designed for transmission over standard OS2 single-mode fiber with a maximum reach of 40 km. It uses a Duplex LC optical connector and is suitable for long-distance Fibre Channel SAN, disaster recovery, storage replication, and enterprise backbone applications.

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LINK-PP LS-SM554G-40C SFP 4G/4.25G 1550nm 40km DOM Duplex LC SMF Optical Transceiver Module

Name: LINK-PP LS-SM554G-40C SFP 4G/4.25G 1550nm 40km DOM Duplex LC SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 185148
Price: 86.74 USD
Availability: InStock
Rating: 4.9 (29 reviews)

# 185148

Product: LINK-PP LS-SM554G-40C SFP 4G/4.25G 1550nm 40km DOM Duplex LC SMF Optical Transceiver Module
SKU: 185148
P/N: LS-SM554G-40C
Price: $ 100.86
Stock: 610 in Stock
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Product URL: https://www.l-p.com/products/482031.htm

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LINK-PP LS-SM554G-40C 4.25G SFP Specifications

The LINK-PP LS-SM554G-40C is a 4.25G SFP transceiver built for long-reach links over single-mode fiber. Its key specifications include a 4.25 Gbps speed, a 40km reach, a 1550 nm wavelength, and a duplex LC interface.

LINK-PP Part Number	LS-SM554G-40C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	4.25Gbps
Wavelength	1550nm	Max Cable Distance	40km
Connector	LC duplex	Media	SMF
Optical Components	DFB 1550nm	DOM	Supported
Receiver Sensitivity	< -17.5dBm	TX Power	-2 to +4dBm
Commercial Temperature Range	0 to 70°C	Protocols	MSA Compliant

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Q: We're planning a storage network upgrade requiring around 250 modules. Do you provide bulk discounts or customized OEM labeling? By K***n on 2025-12-26

A: Absolutely. LINK-PP offers project-based pricing for volume orders, along with OEM/ODM services including customized EEPROM coding, private labels, logo printing, and customized packaging. Simply send us your required quantity and compatible switch models, and we'll prepare a competitive quotation for your project. By admin on 2025-12-26
Q: Is there an industrial-temperature version available for outdoor cabinets or factory automation applications? By Z***n on 2025-08-06

A: Yes. The LS-SM554G-40C is the commercial-temperature version for standard enterprise environments. If your deployment requires operation in harsh conditions, LINK-PP also offers an industrial-grade version with an operating temperature range of -40°C to +85°C. Please contact our sales team for the recommended industrial model. By admin on 2025-08-07
Q: Does the LS-SM554G-40C support Digital Optical Monitoring (DOM/DDM), and which Fibre Channel standards does it support? By J***r on 2025-07-17

A: Yes. The module supports Digital Optical Monitoring (DOM/DDM), allowing real-time monitoring of transmit power, receive power, temperature, supply voltage, and laser bias current. It complies with the SFP MSA, SFF-8472, and supports 1x/2x/4x Fibre Channel operation with data rates up to 4.25Gbps, providing reliable long-term performance for enterprise storage and SAN environments. By admin on 2025-07-18
Q: Has anyone deployed the LS-SM554G-40C with Cisco MDS, Brocade, IBM, or other Fibre Channel switches? Any compatibility issues? By K***g on 2024-03-23

A: Yes. The LS-SM554G-40C is manufactured in compliance with the SFP MSA standard and supports OEM-compatible coding. It has been successfully deployed with Cisco MDS, Brocade, IBM, QLogic, Emulex, and many other compatible Fibre Channel platforms. Most switches recognize the module automatically without additional configuration. If you're unsure about your device model, our technical team can verify compatibility before shipment. By admin on 2024-03-23
Q: Can this module operate over standard OS2 single-mode fiber for the full 40 km distance, and what connector type does it use? By P***e on 2024-01-05

A: Yes. The LS-SM554G-40C is designed for transmission over standard OS2 single-mode fiber with a maximum reach of 40 km. It uses a Duplex LC optical connector and is suitable for long-distance Fibre Channel SAN, disaster recovery, storage replication, and enterprise backbone applications. By admin on 2024-01-06

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Alexis Harris

Belgium

Verified Purchase

5 .0

2026-06-04

We installed these modules for a disaster recovery storage network connecting two buildings over single-mode fiber. The 1550nm optics delivered consistent throughput with zero unexpected link drops.

86 Helpful vote Comments

Megan Gonzalez

France

Verified Purchase

5 .0

2026-05-25

Works perfectly. :)

54 Helpful vote Comments

Allison Green

Ireland

Verified Purchase

4 .0

2026-05-08

The shipping carton had a small dent, but the modules inside were well protected. Performance has been excellent since installation.

92 Helpful vote Comments

Justin Rodriguez

Spain

Verified Purchase

5 .0

2026-04-29

We've tested these modules with Brocade and Cisco MDS switches. Every transceiver was recognized immediately, and all Fibre Channel links came online without requiring firmware changes.

65 Helpful vote Comments

Anthony Wright

Brazil

Verified Purchase

5 .0

2026-04-14

Exactly as described.

9 Helpful vote Comments

Brianna Edwards

Spain

Verified Purchase

4 .0

2026-03-11

Delivery took a little longer than expected, but the modules worked perfectly right out of the box. Overall, we're satisfied with the purchase.

86 Helpful vote Comments

Sydney Allen

Iran, Islamic Republic of

Verified Purchase

5 .0

2026-01-10

Accurate DOM monitoring makes it much easier to verify transmit and receive optical power during routine SAN maintenance.

27 Helpful vote Comments

Brian Carter

Germany

Verified Purchase

5 .0

2025-11-06

Stable link every day.

81 Helpful vote Comments

Ella LastNames

Taiwan, Province of China

Verified Purchase

5 .0

2025-10-20

We use these modules for storage replication between two data centers connected by 40 km of OS2 single-mode fiber. Installation was seamless, Fibre Channel throughput has remained consistent under heavy workloads, and DOM diagnostics greatly simplify preventive maintenance. Compared with original OEM optics, this module delivers outstanding reliability at a significantly lower cost.

48 Helpful vote Comments

Nora Johnson

Brazil

Verified Purchase

5 .0

2025-09-06

Plug and play.

27 Helpful vote Comments

Daniel Torres

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2025-09-04

Deployment across multiple storage switches was quick and trouble-free. Every module established a stable 4.25Gbps Fibre Channel connection immediately after insertion.

21 Helpful vote Comments

Brian Parker

Australia

Verified Purchase

5 .0

2025-08-18

The 40 km transmission distance was exactly what our long-distance storage replication project required. Signal quality has remained excellent under continuous operation.

53 Helpful vote Comments

Stephen LastNames

Cambodia

Verified Purchase

5 .0

2025-06-19

Great OEM replacement.

21 Helpful vote Comments

Ashley Martin

Hungary

Verified Purchase

4 .0

2025-05-08

Packaging could be improved slightly, but every transceiver passed our incoming inspection. The product itself performs exactly as specified.

99 Helpful vote Comments

Grace Clark

United States

Verified Purchase

5 .0

2025-02-04

Works flawlessly with our SAN.

66 Helpful vote Comments

Charles Morris

Maldives

Verified Purchase

5 .0

2025-01-28

Excellent 4G Fibre Channel SFP.

92 Helpful vote Comments

Daniel Ramirez

Indonesia

Verified Purchase

5 .0

2024-12-13

Solid build quality.

13 Helpful vote Comments

Leah Rodriguez

Taiwan, Province of China

Verified Purchase

5 .0

2024-12-10

Installed this 4G Fibre Channel SFP on a 40 km single-mode fiber link between two storage sites. The 1550nm optical signal remained stable, and DOM readings matched the expected values throughout commissioning.

8 Helpful vote Comments

Rebecca Garcia

Brazil

Verified Purchase

5 .0

2024-11-27

Excellent compatible replacement for branded optics. We reduced procurement costs while maintaining the same Fibre Channel performance and link stability.

60 Helpful vote Comments

Kenneth Hill

Romania

Verified Purchase

5 .0

2024-11-22

The Duplex LC interface fit perfectly with our existing OS2 fiber infrastructure. Installation was straightforward, and optical power remained well within specification.

48 Helpful vote Comments

Ella Thomas

Thailand

Verified Purchase

5 .0

2024-10-10

Highly recommended!

49 Helpful vote Comments

Lucy Young

Indonesia

Verified Purchase

5 .0

2024-09-12

Fast delivery, easy setup.

34 Helpful vote Comments

Brooke Phillips

United Arab Emirates

Verified Purchase

5 .0

2024-08-30

Our engineering team evaluated several compatible 4G Fibre Channel transceivers before selecting this model. Stable optical output, reliable DOM monitoring, and consistent interoperability made it the best overall value for enterprise SAN deployments.

100 Helpful vote Comments

Sophia Johnson

Argentina

Verified Purchase

5 .0

2024-08-08

More than eighty units have now been deployed across our primary and backup storage networks. Every 1550nm 40 km Fibre Channel link passed acceptance testing, optical power levels closely matched the datasheet, and long-term operation has been completely stable. We'll continue standardizing on this model for future expansion.

99 Helpful vote Comments

William Phillips

Morocco

Verified Purchase

5 .0

2024-06-06

Very reliable.

43 Helpful vote Comments

Morgan Garcia

Belarus

Verified Purchase

5 .0

2024-05-25

After six months of continuous operation in our enterprise storage environment, these compatible 4G Fibre Channel SFP modules continue to perform flawlessly. The Duplex LC interface, 1550nm optics, 40 km transmission capability, accurate DOM monitoring, and excellent OEM compatibility have made them one of the most dependable optical transceivers we've deployed for mission-critical SAN infrastructure.

63 Helpful vote Comments

Sydney Thompson

France

Verified Purchase

5 .0

2024-03-08

Great value for the price.

86 Helpful vote Comments

Tyler Murphy

Argentina

Verified Purchase

5 .0

2024-01-12

Running continuously in our enterprise SAN environment for several months. The 40 km connection remains stable, and DOM monitoring provides useful real-time diagnostics for maintenance.

42 Helpful vote Comments

Anna Walker

Poland

Verified Purchase

5 .0

2024-01-05

We've successfully deployed these modules with Cisco MDS, Brocade, IBM, and several OEM-compatible Fibre Channel switches. Compatibility has been excellent across all platforms.

25 Helpful vote Comments