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Black Box EFN310-020M-STST Fiber Optic Duplex Patch Cable - 65. 6 ft Single-mode 9/125 µm - 2 x ST Male to 2 x ST Male - Yellow OFNR

SKU: EFN310-020M-STST
UPC: 822088015789
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MSRP: $62.86
$62.95
$49.95
Save: $12.91 (20.51%)
Warranty Information: Lifetime
Condition: New
Width: 1.23 (cm)
Height: 1.23 (cm)
Depth: 1.23 (cm)
Availability: Canada: Very Limited Supply
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Product Features

Description

Product Overview

The Black Box EFN310-020M-STST is a professional-grade fiber optic duplex patch cable designed for reliable network connectivity in data centers, enterprise environments, and telecom installations. This cable features a single-mode fiber construction with a 9/125 µm core/cladding specification, optimized for long-distance, high-bandwidth data transmission with minimal signal loss.

Built with a durable yellow OFNR-rated PVC jacket, this patch cable offers crush resistance to withstand demanding installation conditions and routine handling. The consistent yellow color aids in quick identification and organization within cable management systems, streamlining maintenance and troubleshooting workflows.

Cable Snapshot
65.6 ft
Connector Layout
End A2 x ST Network - Male
End B2 x ST Network - Male
JacketOFNR
Cable Specifications
Cable TypeFiber Optic
CharacteristicPatch Cable
Fiber ModeSingle-mode
Connector Details
First End2 x ST Network - Male
Second End2 x ST Network - Male
Core/Cladding9/125 µm
Physical & Warranty
Length65.6 ft
Jacket TypeOFNR
WarrantyLifetime

Technical Overview

This fiber optic patch cable utilizes single-mode fiber technology, which supports higher bandwidth over longer distances compared to multimode alternatives, making it ideal for backbone connections, inter-building links, and high-speed network infrastructures. The 9/125 µm core/cladding specification ensures precise light transmission for efficient data transfer.

Each end of the cable is terminated with two ST male connectors, providing a duplex configuration that supports simultaneous transmit and receive channels. The ST connector design offers a robust, twist-lock mechanism for secure connections, reducing the risk of accidental disconnections in active network environments.

Cable Length65.6 ft
Fiber ModeSingle-mode
Connectors per End2 x ST Male
OFNR JacketCrush ResistantDuplex Configuration

Key Product Advantages

This cable delivers high-performance connectivity with features tailored for professional network deployments. Its single-mode fiber core enables low-latency, high-speed data access across extended distances, supporting critical applications where data integrity and speed are paramount.

Durable Construction

The OFNR-rated PVC jacket provides flame resistance and crush protection, ensuring long-term reliability in rack-mounted, under-floor, or overhead cable runs.

  • Withstands physical stress
  • Flame-retardant design
  • Suitable for plenum spaces

Optimized Connectivity

With ST connectors on both ends, this cable ensures compatible, secure connections to a wide range of fiber optic network equipment, including switches, routers, and media converters.

  • Twist-lock connector security
  • Duplex for full-duplex data flow
  • Industry-standard interface

Deployment / Use Cases

This fiber optic patch cable is engineered for scenarios requiring robust, high-speed data links. It is commonly deployed in data centers to connect servers to core switches, in enterprise networks for backbone infrastructure, and in telecommunications setups for inter-facility connections.

Typical applications include extending network segments between buildings, linking network racks within a server room, and integrating with fiber optic distribution frames. The crush-resistant jacket and reliable connectors make it suitable for environments with high cable density or frequent reconfigurations.

Ports ST Network - Male
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Highlights

  • 65.6 ft single-mode fiber optic patch cable for extended reach
  • Duplex configuration with 2 x ST male connectors on each end
  • 9/125 µm core/cladding for efficient long-distance data transmission
  • OFNR-rated yellow PVC jacket for crush resistance and safety
  • Lifetime warranty for long-term reliability assurance
  • Compatible with network devices requiring ST fiber connections
  • Ideal for data centers, enterprise networks, and telecom setups
  • Bright yellow color aids in cable management and identification
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Specifications

Specifications
ManufacturerBlack Box Corporation
Manufacturer Part NumberEFN310-020M-STST
Brand NameBlack Box
Product NameFiber Optic Duplex Patch Network Cable
Product TypeNetwork Cable
Technical Information
Cable TypeFiber Optic
Cable CharacteristicPatch Cable
Fiber Optic ModeSingle-mode
Fiber Optic Cable Core/Cladding Specification9/125 µm
Cable Length65.6 ft
Connector Type on First EndST Network - Male
Connector on First End Details2 x ST Network - Male
Connector Type on Second EndST Network - Male
Connector on Second End Details2 x ST Network - Male
Jacket TypeOFNR
Device SupportedNetwork Device
FeaturesCrush Resistant
Physical Characteristics
Color FamilyYellow
Product ColorYellow
Jacket MaterialPolyvinyl Chloride (PVC)
Miscellaneous
Country of OriginChina
Warranty
Limited WarrantyLifetime
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FAQ

What is the difference between single-mode and multimode fiber in this cable?

This cable uses single-mode fiber, which has a smaller core (9/125 µm) designed for long-distance, high-bandwidth transmission with minimal signal loss, typically over kilometers. It is ideal for backbone networks and inter-building links, whereas multimode fiber is better for shorter distances within a building.

What does the OFNR jacket rating mean for installation?

OFNR stands for Optical Fiber Non-Conductive Riser, indicating the jacket is flame-retardant and suitable for use in vertical riser spaces between floors of a building. This rating ensures compliance with safety codes for plenum and riser environments, providing added protection in commercial installations.

Can this cable be used for connecting network switches to servers?

Yes, this duplex patch cable is designed to connect network devices like switches, routers, and servers that have ST fiber optic ports. The duplex configuration supports simultaneous transmit and receive channels, making it effective for full-duplex data communication in data center or enterprise setups.

What is the significance of the 9/125 µm specification?

The 9/125 µm specification refers to the core and cladding diameters of the fiber: 9 micrometers for the core and 125 micrometers for the cladding. This precise geometry in single-mode fiber allows for efficient light propagation with low dispersion, enabling high-speed data transfer over long distances without significant signal degradation.

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Black Box EFN310-020M-STST Fiber Optic Duplex Patch Cable - 65. 6 ft Single-mode 9/125 µm - 2 x ST Male to 2 x ST Male - Yellow OFNR
MSRP: $62.86
$62.95
$49.95
Save: $12.91 (20.51%)
Available & Ready to Ship