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Allied Telesis AT-SPSX Compatible LINK-PP 1G SFP 850nm 550m Duplex LC DOM MMF Optical Transceiver Module
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Allied Telesis AT-SPSX Compatible LINK-PP 1G SFP 850nm 550m Duplex LC DOM MMF Optical Transceiver Module

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Product summary

Product
Allied Telesis AT-SPSX Compatible LINK-PP 1G SFP 850nm 550m Duplex LC DOM MMF Optical Transceiver Module
SKU
212747
P/N
LS-MM851G-S5C
Price
$ 6.99
Stock
353 in Stock
Sold
1.7K
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
25 Reviews
5 Questions
1.7K Sold
Shipping:
Free Shipping
to United States via FedEx
Estimated delivery time : 3 - 10 days.
5-Year Warranty 30-Day Returns 30-Day Exchange
Warranty
  • Providing industry-leading 5-year warranty.
  • Read the table for details of all products' warranty.
Returns & Exchange
  • Refunds will be received about 5 business days after the receipt of returned items.
  • Items in stock for replacement can be shipped within 1 business day.
  • Read the full return policy for details.
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Allied Telesis AT-SPSX Compatible LINK-PP 1G SFP Specifications

The Allied Telesis AT-SPSX Compatible LINK-PP module is a high-performance, commercial-grade SFP transceiver delivering data rates up to 1.25 Gbps. Featuring an 850nm VCSEL transmitter and a duplex LC interface, it operates efficiently over multi-mode fiber for distances up to 550 meters. Complete with digital optical monitoring support, it ensures reliable and stable gigabit network connectivity.

Allied Telesis Part NumberAT-SPSXVendor NameLINK-PP
Form Factor SFP Max Data Rate 1.25Gbps
Wavelength 850nm Max Cable Distance 550m over OM2 MMF
Connector Duplex LC Media MMF
Transmitter Type VCSEL Receiver Type

PIN

TX Power -9 to 0dBm RX Power -20 to -1dBm
Receiver Sensitivity -18dBm DOM Support Yes
Operating Temperature Range 0 to 70°C Protocols

IEEE 802.3z, SFF-8472, FC-PI, SFP MSA (INF-8074i) Compliant

Key Features of Allied Telesis AT-SPSX Compatible LINK-PP 1G SFP

This hot-pluggable module stands out for its low power consumption, outstanding electromagnetic interference performance, and built-in digital optical monitoring. Its high-reliability 850nm VCSEL laser and dual LC connector ensure exceptional performance, robust signal integrity, and seamless integration into diverse, high-density gigabit networking environments.

Allied Telesis AT-SPSX Compatible LINK-PP 1G SFP Optical Module

Engineered for high-speed data communication, the Allied Telesis AT-SPSX Compatible LINK-PP optical module provides an efficient gigabit solution. It combines advanced optical engineering with a small form-factor design to deliver cost-effective and dependable fiber-optic networking capabilities.

AT-SPSX: 1G Connectivity for Multi-building Interconnections

Ideal for enterprise campuses, this transceiver bridges separate corporate facilities seamlessly. It ensures ultra-fast data transfer rates across localized infrastructure, making it perfect for multi-building network expansions, campus backbones, and localized data aggregation networks.

AT-SPSX Module with 850nm Wavelength

Utilizing a short-wavelength 850nm VCSEL laser, this transceiver optimizes data transmission over multi-mode infrastructure. This specific wavelength guarantees low signal attenuation and exceptional power efficiency, which reduces overall operational costs for short-range data links.

AT-SPSX Module Supporting 550m Transmission

Delivering dependable connectivity across medium-range distances, this module supports links up to 550 meters over multi-mode fiber. It provides adequate reach for enterprise-level backbones, server rooms, and local distribution frames without compromising signal speed.

AT-SPSX Module with Duplex LC Interface

Equipped with a standard duplex LC connector, this SFP ensures a secure and tight optical link interface. The standard locking design allows for effortless patch cable installation, minimizing signal reflection and boosting connection stability.

AT-SPSX Module with DOM for Real-Time Monitoring

Featuring integrated Digital Optical Monitoring, the module tracks critical real-time performance parameters. IT professionals can easily monitor transceiver temperature, supply voltage, laser bias current, and accurate transmit-receive power levels to prevent network downtime.


Allied Telesis AT-SPSX Compatible LINK-PP 1G SFP Certification

This SFP transceiver is fully certified to meet strict global safety standards. It strictly complies with CE, FCC, REACH and RoHS regulations, guaranteeing safe, environmentally friendly operations.

Optical Transceivers Testing

Every transceiver undergoes a comprehensive quality testing program before shipment. This ensures individual units satisfy strict network throughput standards and deliver continuous, malfunction-free operational lifetimes.

AT-SPSX Quality Certifications

Manufactured under rigorous ISO 9001 and ISO 14001 guidelines, this module guarantees structural integrity. These certifications highlight LINK-PP's ongoing commitment to premium manufacturing and sustainable environment management.

AT-SPSX Certified for Reliable Host-Device Compatibility

Adhering strictly to SFP MSA guidelines, this transceiver provides guaranteed compatibility. It is certified to work seamlessly with various third-party network switches, routers, and host servers.


Rigorous Testing Ensures Reliable SFP Performance

Advanced multi-stage diagnostic testing validates that every optical transceiver operates smoothly, ensuring completely robust performance under high-traffic network workloads.

Optical

Optical Spectrum Test

This test precisely measures central wavelength and spectral width to guarantee optical compliance.

Optical

Eye Pattern Test

Eye diagram analysis evaluates transmitter signal quality and ensures low waveform distortion.

Optical

Bit Error Rate Test

BERT validation guarantees flawless data packet transmission with zero packet drop rates.

Optical

Temperature Test

Thermal chamber testing guarantees optimal functionality across the entire commercial temperature range.


Product Shipping for Allied Telesis AT-SPSX Compatible LINK-PP 1G SFP

Our specialized logistic processes ensure your order arrives quickly and in perfect condition, ready for immediate data center deployment.

Anti-Static Protective Packaging

Anti-Static Protective Packaging

Sealed ESD bags protect internal circuits from electrostatic damage during handling.

Shock-Resistant Transport Protection

Shock-Resistant Transport Protection

Custom cushioned boxes safeguard the delicate optical interfaces from physical vibrations.

Fast Order Processing and Dispatch

Fast Order Processing and Dispatch

Streamlined warehouse operations guarantee rapid order verification and swift delivery dispatch.

Global Logistics and International Delivery

Global Logistics and International Delivery

Reliable shipping networks offer tracked international transit directly to your location.

Allied Telesis AT-SPSX Compatible LINK-PP 1G SFP Usage Demonstration

This demonstration illustrates the effortless hot-swappable installation of the module into an active enterprise switch. Witness its instant recognition, real-time DOM telemetry generation, and the immediate establishment of a stable gigabit connection.

AT-SPSX Technical Support

LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.

Pre-Sales Technical Consultation

Pre-Sales Technical Consultation

Professional technical guidance to help customers select the most suitable AT-SPSX modules based on network architecture and application requirements.

Compatibility Verification Support

Compatibility Verification Support

Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.

Deployment & Installation Assistance

Deployment & Installation Assistance

Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.

Long-Term Technical Assurance

Long-Term Technical Assurance

Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.

Allied Telesis AT-SPSX Compatible LINK-PP 1G SFP After-Sales Assurance

LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.

15 days

15-day no-reason return and refund

Free maintenance or replacement

Free replacement for dead-on-arrival (DOA) or defective items within the initial period

Free maintenance

 Free repair services for manufacturing defects throughout the warranty period

Limitations

Warranty exclusions and conditions apply

Model Comparison Table

LINK-PP

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S***s
Venezuela
Verified Purchase
5 .0
2026-05-18
Works great over OM2 MMF patch cables!
S***s
Panama
Verified Purchase
5 .0
2026-05-07
Nice MMF optical transceiver for short links.
B***s
Italy
Verified Purchase
5 .0
2026-04-08
Replaced old modules with this LS-MM851G-S5C. The duplex LC interface clicked perfectly into place.
J***z
Kenya
Verified Purchase
5 .0
2025-11-22
Awesome OEM compatibility! Linked my Dell core switch to a Ubiquiti edge router seamlessly.
B***n
Macao
Verified Purchase
5 .0
2025-11-22
Solid MSA compliant SFP, plug and play!
E***e
United Kingdom
Verified Purchase
4 .0
2025-11-02
Packaging was excessive for these transceivers, though the 850nm SFP performance is solid.
P***r
India
Verified Purchase
5 .0
2025-07-14
Deployed these gigabit transceivers for a multi-building fiber campus network. The 550m distance spec is conservative; we pushed solid speeds without signal degradation. Essential gear for any serious data center!
N***z
Norway
Verified Purchase
5 .0
2025-06-04
Perfect 1G SFP for indoor switch upgrades!
B***a
Belgium
Verified Purchase
5 .0
2025-05-25
Flawless Cisco compatible 1G SFP module connection.
K***n
France
Verified Purchase
5 .0
2025-05-16
Great price for bulk 1.25G SFP transceivers.
K***n
Ukraine
Verified Purchase
5 .0
2025-05-15
Fast 850nm transceiver, DOM feature is super handy.
M***r
United States
Verified Purchase
5 .0
2025-05-09
Good duplex LC SFP for home NAS.
J***n
Colombia
Verified Purchase
5 .0
2025-03-18
Upgraded our campus networking setup. The 550m transmission distance is perfectly accurate!
J***e
United States
Verified Purchase
5 .0
2024-09-03
Best shipping experience in the inter webs
V***v
Malaysia
Verified Purchase
5 .0
2024-08-09
Thanks, good price and Fast respond. Wait for the next order.
Y***S
Finland
Verified Purchase
5 .0
2024-06-14
On time delivery and Link-pp always has great customer service!
M***o
United States
Verified Purchase
5 .0
2024-05-17
I ordered equipment from LINK-PP.COM regularly and they always deliver. I have not had a bad or missed order and everything is in good condition. Turnaround times are Fast and expectations are always met. That's why I choose it.
J***n
Mexico
Verified Purchase
5 .0
2024-04-13
I had some questions about an order I placed on the weekend and received prompt, professional, and courteous service.
A***L
Netherlands
Verified Purchase
5 .0
2024-02-25
Super Product, will buy again.
A***y
Japan
Verified Purchase
5 .0
2024-02-17
So far great pricing. Haven't received the product yet.
T***d
United States
Verified Purchase
5 .0
2023-12-13
installed a couple days ago on our test bed, seems to work perfectly fine.Will probably buy again
R***n
United States
Verified Purchase
5 .0
2023-11-17
I am very pleased with how easy it is to find everything I need on the site. It is Fast and works well with purchases through my PayPal account. Glad to see l-p.com is utilizing the latest payment methods.
C***s
Australia
Verified Purchase
5 .0
2023-05-30
Work perfectly , Quick and easy to use. Excellent results. More conaistently good results and much easier to use
H***n
Turkey
Verified Purchase
5 .0
2023-04-20
Great price and quick shipping. Great seller.
R***f
Japan
Verified Purchase
5 .0
2023-03-20
Very nice variety of products. Prices are great
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