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1000Base-SX Multimode SFP Modules

1000Base-SX Multimode SFP Modules are designed for Gigabit Ethernet connections over multimode fiber in compatible network equipment. Both models support transmission distances up to 550 meters, with one option also providing Digital Diagnostic Monitoring for added optical performance visibility. These modules are well suited for short- to medium-distance fiber links in data centers, network closets, and enterprise environments.

  • Designed for 1000Base-SX Gigabit Ethernet applications
  • Supports multimode fiber connections
  • Supports transmission distances up to 550 meters
  • Available with or without Digital Diagnostic Monitoring
  • Designed for use with compatible SFP-enabled network equipment
  • Provides a practical solution for short- and medium-distance Gigabit fiber links
  • Helps expand network connectivity without replacing compatible switching equipment
  • Offers flexibility for installations that require diagnostic monitoring
  • Suitable for data centers, network closets, and enterprise networks
  • Provides dependable Gigabit fiber connectivity for professional network installations
Where to Buy Available from authorized Networx resellers
Available Models
SFP-1000MMD-LC
SFP Gigabit Fiber Module - 1000Base-SX, LC Multimode, Digital Diagnostic Monitoring, 550m, 850nm
Networx® DDM Gigabit multimode SFP adds live diagnostics to 550m 850nm links.
$76.79
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SFP-1000MM-LC
SFP Gigabit Fiber Module - 1000Base-SX, LC Multimode, 550m, 850nm
Networx® 550m Gigabit multimode SFP supports reliable 850nm short-reach links.
$59.19
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Products specifications
Attribute name Attribute value
Cisco Equivalent GLC-SX-MMD
Color Silver
Compliance SFF-8472
Fiber Type Multimode
Laser Type VCSEL
Maximum Data Transfer Rate 1 Gbps
Maximum Transfer Distance 550m
Power Supply +3.3V
Wavelength 850nm
SKU SFP-1000MM