Cisco GLC-SX-MM Compatible 1000BASE-SX 1.25G SFP Transceiver Module 850nm MMF LC with DOM - 550m

Cisco compatible GLC-SX-MM transceiver. Complies with MSA standards

PI Part #: SFP-SX-550M

Cisco GLC-SX-MM Compatible 1000BASE-SX 1.25G SFP Transceiver Module 850nm MMF LC with DOM - 550m

In Stock; Ships same business day

Shipping Information

All products ship same day from our warehouse in Walnut, CA if ordered within the shipping cutoff times

 Reviews 2 Product Highlights

  • Compatible Cisco GLC-SX-MM 1.25G fiber SFP transceiver
  • Transmission Distance: 550m
  • Fiber Connector: LC Duplex
  • Fiber Type: Multimode fiber
  • Complies with MSA (Multi-Sourcing Agreement) standards

TAA Compliance

PI Manufacturing TAA compliant products meet the U.S. Government's Trade Agreements Act (TAA), which fosters fair and open international trade.
TAA compliant products can only be acquired from products made in the United States or in an approved country.

Our Price: $12.00

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Cisco GLC-SX-MM Compatible 1000BASE-SX 1.25G SFP Transceiver Module 850nm MMF LC with DOM - 550m

Small form factor pluggable (SFP) transceivers are used in data communication applications where it's often installed on networking hardware (switches, media converters, etc.) to connect a fiber optic cable. Due to its higher port density, its support of different speeds, and its ability to use various types of fiber cables, the SFP transceiver is often used by OEMs when compared to a standard GBIC (Gigabit Interface Converter). The SFP transceiver is hot-pluggable and compact, making it ideal for use in network applications. SFP transceivers come with various specifications, allowing users to tailor to their specific preference.

The Leapmicro series SFP transceivers from PI Manufacturing are designed for use with Cisco equipment. Equivalent to the Cisco GLC-SX-MM, this transceiver is 100% compatible and fully tested to meet or exceed OEM specifications. Specific OEM configuration data is loaded onto the EEPROM of the transceiver, allowing it to operate identically to the OEM's transceiver. The transceiver complies with Multi-Source Agreement (MSA) standards.


  • SFP module with Multimode LC Duplex connector
  • Data Rate: 1.25G
  • Wavelength: 850nm
  • Cable Type: MMF (Multimode fiber)
  • Fiber Connector: LC Duplex
  • Maximum Distance: 550m
  • With DDM (Digital Diagnostic Monitoring) / DOM (Digital Optical Monitoring)
  • Hot pluggable if your device supports
  • Application: 1000BASE-SX
  • Compliant with MSA (Multi-Sourcing Agreement) standards
  • Lead free
  • RoHS compliant

Quality and Compliance

Our quality policy is in compliance with various standards. This includes ISO:9001, RoHS, REACH, CE, FCC, and FDA. PI Manufacturing's quality assurance system ensures that from design, production, receiving / distribution, and deployment that our products deliver. That is the backbone of our company's fiber products.

Lifetime Warranty

At PI Manufacturing, we want to make sure that you're covered for your purchase. Our Leapmicro series fiber products deliver performance, coupled by reliability that's backed with our industry standard lifetime warranty.

Please Note: Deploying Leapmicro transceivers does not void the warranty issued by the network equipment manufacturer. All network equipment manufacturers state that installing 3rd party transceivers will not affect the warranty provided on their equipment.

UPC: 091324402670

WARNING: Cancer and Reproductive Harm
(California law requires this warning to be provided to California customers)

CompatibilityCisco GLC-SX-MM
Form FactorSFP
ConnectorLC Duplex
Cable TypeMMF (Multimode Fiber)
Data Rate1.25Gb/s 1000BASE-SX
Optical Output Power-9 ~ -3dBm
Case Operating Temperature0° - 70°C (32° - 158°F)
Storage Temperature-40° - 85°C (-40° - 185°F)
Optical (TX)850nm VCSEL (vertical-cavity surface-emitting laser)
Optical (RX) Sensitivity< -17dBm
DDM / DOM SupportYes (Digital Diagnostic Monitoring / Digital Optical Monitoring)
Regulatory Compliance
Electro Discharge (ESD) to the Electrical PinsMIL-STD-883E Method 3015.7
Electro Discharge (ESD) to the Duplex LC ReceptacleIEC 6100-4-2
Electromagnetic Interference (EMI)FCC Part 15 Class B
EN55022 Class B (CISPR 22B)
VCCI Class B
Laser Eye SafetyFDA21CFR 1040.10 and 1040.11
EN60950, EN (IEC) 60825-1,2
RoHS2002/95/EC 4.1&4.2

 (2 Reviews) Log in to post a review

Mike on 11/8/2018


I needed a SFP module that was compatible with a Cisco switch that I purchased. The product from PI Manufacturing worked perfectly for my needs without any issues.

KGREER on 5/18/2016

SFP review

SFP's say that they are cisco compatible. I have tested the units in a Cisco 3750, Cisco 300 small business switch 8port and 24 port, HP bladed switch and 1000 Gb MC-SFP-1 transceivers. The units have worked In all of the units with no problems. For the price this are unbeatable.

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