Do I need to power off my switch before plugging in or pulling out this module?

No, the LS-MM8501-S5C SFP optical transceiver supports hot-plugging. You can safely insert or remove the module while the switch is running without disrupting other ports.

What kind of fiber patch cord do I need to buy to connect to the LS-MM8501-S5C SFP module?

You need a multi-mode fiber patch cord with a Duplex LC connector. Single-mode cables or SC connectors will not plug in or work.

I have an existing OM2 fiber run that is 400 meters long. Will this module work?

Yes. This 155M SFP module uses an 850nm wavelength and can transmit data up to 550m over standard multi-mode fiber, so your 400-meter run is safe.

I run a small local integration business. Is there a Minimum Order Quantity (MOQ) to get a wholesale discount?

We support growing businesses! While larger orders get deeper discounts, our MOQ for wholesale pricing is very flexible. Contact our sales team, and we will find a budget-friendly solution for you.

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LINK-PP LS-MM8501-S5C 155M SFP 850nm 550m Duplex LC DDM MMF Optical Transceiver Module

Name: LINK-PP LS-MM8501-S5C 155M SFP 850nm 550m Duplex LC DDM MMF Optical Transceiver Module
Brand: LINK-PP
SKU: 205747
Price: 4.73 USD
Availability: InStock
Rating: 4.9 (24 reviews)

# 205747

Product: LINK-PP LS-MM8501-S5C 155M SFP 850nm 550m Duplex LC DDM MMF Optical Transceiver Module
SKU: 205747
P/N: LS-MM8501-S5C
Price: $ 5.5
Stock: 150 in Stock
Sold: 850
Product URL: https://www.l-p.com/products/494067.htm

For Order Over $1000 Get $15.00 Off , Code: Linkpp15

For Order Over $3000 Get $50.00 Off , Code: Linkpp50

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Manufacture: LINK-PP

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Compatible:: LINK-PP

Compatible P/N:: LS-MM8501-S5C | 550m; LS-MM8501-S5I | 550m; LS-MM3101-02C | 2km; LS-MM3101-02EI | 2km; LS-MM3101-02I | 2km; LS-MM8501-02C | 2km; LS-MM8501-02I | 2km

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LINK-PP LS-MM8501-S5C 155M SFP Specifications

LS-MM8501-S5C operates as a commercial-grade 155M SFP module featuring an 850nm optical design and duplex LC interface for 550m transmissions, incorporating real-time Digital Diagnostic Monitoring (DDM) for instant diagnostics while operating between 0 and +70°C.

LINK-PP Part Number	LS-MM8501-S5C	Vendor Name	LINK-PP
Form Factor	SFP	Max Data Rate	155Mbps
Wavelength	850nm	Max Cable Distance	550m
Connector	Duplex LC	Media	MMF
Transmitter Type	VSCEL	Receiver Type	PIN
TX Power	-14 to -8dBm	RX Power	-32 to -6dBm
Receiver Sensitivity	-23dBm	DDM Support	Yes
Operating Temperature Range	0 to 70°C	Protocols	MSA Compliant

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Q: Do I need to power off my switch before plugging in or pulling out this module? By M***e on 2026-05-12

A: No, the LS-MM8501-S5C SFP optical transceiver supports hot-plugging. You can safely insert or remove the module while the switch is running without disrupting other ports. By admin on 2026-05-13
Q: What kind of fiber patch cord do I need to buy to connect to the LS-MM8501-S5C SFP module? By L***h on 2025-12-24

A: You need a multi-mode fiber patch cord with a Duplex LC connector. Single-mode cables or SC connectors will not plug in or work. By admin on 2025-12-25
Q: I have an existing OM2 fiber run that is 400 meters long. Will this module work? By A***y on 2025-10-05

A: Yes. This 155M SFP module uses an 850nm wavelength and can transmit data up to 550m over standard multi-mode fiber, so your 400-meter run is safe. By admin on 2025-10-06
Q: I run a small local integration business. Is there a Minimum Order Quantity (MOQ) to get a wholesale discount? By E***l on 2025-04-29

A: We support growing businesses! While larger orders get deeper discounts, our MOQ for wholesale pricing is very flexible. Contact our sales team, and we will find a budget-friendly solution for you. By admin on 2025-04-30

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L***t

Macao

Verified Purchase

5 .0

2026-05-28

This 155M SFP optical module has been a strong fit for our short-reach multimode network runs. The 850nm wavelength, duplex LC interface, and 550m transmission rating make it very practical for indoor enterprise links. It installed cleanly, linked up quickly, and stayed stable during long uptime testing. The DOM function also helped our team check optical status with less manual troubleshooting. For legacy 155M environments, it feels like a reliable and straightforward solution.

134 Helpful vote Comments

E***t

Belarus

Verified Purchase

5 .0

2026-05-02

Used for building-to-building fiber link, 100% stable.

48 Helpful vote Comments

M***t

Maldives

Verified Purchase

5 .0

2026-04-10

The LC duplex interface was exactly what we wanted for a fast swap in a telecom closet. The module felt solid and the link stayed up after repeated re-inserts.

92 Helpful vote Comments

L***n

United Kingdom

Verified Purchase

5 .0

2026-03-11

This module was a good fit for a mixed-vendor switch room. It passed our basic compatibility test and the DOM data was easy to read in our monitoring workflow.

92 Helpful vote Comments

V***d

Lithuania

Verified Purchase

4 .0

2026-03-04

The module passed our compatibility test, but the outer carton arrived slightly dented. Fortunately, the SFP optics and link performance were unaffected.

35 Helpful vote Comments

O***r

Libyan Arab Jamahiriya

Verified Purchase

5 .0

2026-02-27

We deployed these 155M SFP modules in a small data room with older fiber panels and they behaved as expected. No unexpected alarms, no link flap, just steady service.

66 Helpful vote Comments

L***d

India

Verified Purchase

5 .0

2026-01-22

DOM features work perfectly on our switches, great value!

39 Helpful vote Comments

N***s

Australia

Verified Purchase

5 .0

2026-01-15

This LS-MM8501-S5C SFP transceiver was a good solution for our indoor fiber backbone where multimode cabling was already in place. The 850nm optics and 550m reach align well with typical short-distance connections between switches and aggregation points. Installation was simple, and the link came up without extra tuning. It is also easy to stock as a replacement part because the use case is so common. Overall, it is a dependable module for routine network support work.

141 Helpful vote Comments

C***e

Bulgaria

Verified Purchase

5 .0

2025-12-31

Used these SFP modules for a multi-mode fiber link between two distribution racks. 550m range is more than enough for our warehouse layout. The DOM interface shows very healthy optical power levels. Recommended!

87 Helpful vote Comments

S***e

Hungary

Verified Purchase

5 .0

2025-12-19

Best budget 155M multi-mode SFP transceiver for enterprise campus networks.

55 Helpful vote Comments

H***n

Iran, Islamic Republic of

Verified Purchase

5 .0

2025-11-02

Our installer said the fit was clean, the latch felt secure, and the module seated properly in every port we tried. That saved time during the rollout

85 Helpful vote Comments

H***e

Sweden

Verified Purchase

5 .0

2025-10-14

From an operations perspective, this is the kind of optic that makes deployment easy. The form factor is familiar, the LC duplex connector is convenient, and the module works well in standard SFP slots. We appreciated the built-in diagnostic monitoring, which gave us useful visibility during validation. Performance stayed steady across multiple test points, and that gave our technicians confidence. It is a sensible part for structured enterprise maintenance.

157 Helpful vote Comments

J***r

Russian Federation

Verified Purchase

5 .0

2025-10-03

Cheap, reliable 850nm 155M SFP module, will buy another batch soon.

78 Helpful vote Comments

Z***n

Japan

Verified Purchase

5 .0

2025-09-26

I bought these for a small branch office refresh, and the install was painless. Duplex LC and MMF support made it a straightforward swap for older 155M SFP optics.

89 Helpful vote Comments

E***s

Israel

Verified Purchase

5 .0

2025-08-30

A good choice for regional office networking where multi-mode cabling is already in place. It kept the project simple and the budget under control.

107 Helpful vote Comments

S***y

Thailand

Verified Purchase

5 .0

2025-07-28

We tested this 155M SFP module as part of a compatibility and stability check for older network equipment. It handled the job without issue and delivered the kind of consistent optical performance we need in production environments. The DOM support made it easier to verify health during commissioning. Because it is designed for multimode fiber and short-reach service, it fits many legacy upgrade scenarios. For teams that value predictable behavior, it is a very solid option.

158 Helpful vote Comments

B***o

United Arab Emirates

Verified Purchase

5 .0

2025-07-07

High-quality 155M SFP optical module, highly recommended for budget setups. ✨

54 Helpful vote Comments

A***l

Canada

Verified Purchase

5 .0

2025-06-14

Fast shipping, flawless 550m run over old OM2 fiber. Perfect!

42 Helpful vote Comments

N***n

Germany

Verified Purchase

5 .0

2025-06-01

Testing these LINK-PP 155M multi-mode optical transceivers on our legacy edge switches. They run cool, pull minimal power, and the DOM monitoring makes tracking RX/TX levels incredibly simple. Will purchase more for the remaining stack.

110 Helpful vote Comments

A***p

Romania

Verified Purchase

5 .0

2025-05-25

We used the LS-MM8501-S5C 155M SFP in a campus multi-mode ring, and it brought up the link cleanly on day one. The 850nm / 550m spec matched our short-run fiber layout well.

76 Helpful vote Comments

I***n

Norway

Verified Purchase

4 .0

2025-05-16

Performance was solid, though the delivery took longer than we expected. Once installed, the SFP behaved exactly as a 550m MMF part should.

26 Helpful vote Comments

G***y

Cambodia

Verified Purchase

5 .0

2025-04-29

Quick hot-swap replacement, absolute lifesaver for our legacy rack!

69 Helpful vote Comments

R***k

Ukraine

Verified Purchase

5 .0

2025-04-05

We used this 155M SFP transceiver in a small office fiber refresh project, and it performed exactly as expected. The commercial-grade design worked well in standard rack and closet environments, where consistent connectivity matters more than extra features. Its multimode support and short-reach distance are a good match for existing fiber plant. The module also behaved well during repeated insert-and-remove cycles. It is a practical choice for teams maintaining older network infrastructure.

111 Helpful vote Comments

A***e

Poland

Verified Purchase

5 .0

2025-03-18

For the price, this is a very practical multi-mode SFP transceiver for legacy Ethernet links. We needed stable short-reach performance more than anything, and it delivered.

73 Helpful vote Comments