MPO/MTP MALE SINGLE MODE 9/125UM FIBER LOOPBACK TEST PLUG; MALE MPO-12 CONNECTOR

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Key Features

RELIABLE FIBER TESTING: Create a loopback test connection with this MPO Single Mode fiber loopback plug; Male MPO-12 connector for testing female MPO/MTP ports; Test 12-fiber MPO installations and QSFP transceivers for continuity
ACCURATE TEST PERFORMANCE: Maintain precise loopback signaling with insertion loss below 0.35dB; Repeatability within 0.2dB ensures consistent results across multiple connections; Return loss above 50dB minimizes back-reflection for stable signaling
BUILT FOR DURABILITY: Optimized for multiple test cycles using high-precision ceramic ferrules in a compact ABS housing; Built in compliance with IEC and RoHS standards for reliable testing in regulated environments
FIELD-READY DESIGN: Compact form factor is ideal for technicians performing on-site diagnostics and fault isolation; Quickly troubleshoot cables and verify performance in single mode MPO/MTP patch panels and transceivers; Includes protective dust cap
THE IT PRO'S CHOICE: Our network tools and testers are rigorously tested in our Innovation Lab to ensure enterprise-grade reliability and durability; Built for quick diagnostics and routine maintenance across copper and fiber networks; Backed by free lifetime 24/5 multi-lingual technical assistance

Manuals & Resources

MANUAL User Manual › DATASHEET Product Datasheet › BROCHURE Manufacturer Brochure › MANUAL Assembly Instructions › WARRANTY Warranty Information › DATASHEET Product Fiche › GUIDE Energy Guide › SAFETY Safety Data Sheet › SAFETY Safety Data Sheet (FR) › SAFETY COSHH Sheet › TOUR Product Tour › 360 360° Product View ›

STARTECH.COM Test Equipment

MPO/MTP MALE SINGLE MODE 9/125UM FIBER LOOPBACK TEST PLUG; MALE MPO-12 CONNECTOR

Mfr # LOOPBACKMTP12OS2SMM SKU 15411512 UPC 065030925242

$52.60 MSRP $77.89 Save 32%

Regular price saves you $25.29 against MSRP.

Available

Product Overview

MPO/MTP MALE SINGLE MODE 9/125UM FIBER LOOPBACK TEST PLUG; MALE MPO-12 CONNECTOR

StarTech.com (LOOPBACKMTP12OS2SMM) Test Equipment
StarTech MPO Loopback Plug, Single Mode 9/125 MPO-12 Male Fiber Loopback Adapter, MPO/MTP Male Loopback Tester - MPO/MTP Male Single Mode 9/125um fiber loopback test plug; Male MPO-12 connector for testing MPO patch panels and QSFP transceivers; 12-fiber configuration with APC-polished ends; Low Insertion Loss; IEC and RoHS compliant
StarTech MPO Loopback Plug, Single Mode 9/125 MPO-12 Male Fiber Loopback Adapter, MPO/MTP Male Loopback Tester
MPO/MTP Male Single Mode 9/125um fiber loopback test plug; Male MPO-12 connector for testing MPO patch panels and QSFP transceivers; 12-fiber configuration with APC-polished ends; Low Insertion Loss; IEC and RoHS compliant

Technical Specifications

Product Type	Fiber Optic Loopback
Manufacturer Part Number	LOOPBACKMTP12OS2SMM
Packaged Quantity	1
Limited Warranty	1 Year
Weight (Approximate)	0.10 oz
Manufacturer	StarTech.com
Product Name	LOOPBACKMTP12OS2SMM
Brand Name	StarTech.com
Height	0.4"
Width	0.5"
Device Function	Fiber Optic Cable Testing
Device Function	Network Testing
Device Function	Network Troubleshoot
TAA Compliant	Yes
Product Color	Black
Product Color	Green
Color Family	Dual Color
Environmental Compliance	Restriction of Hazardous Substances (RoHS)

Marketing Information

This Single Mode MPO Loopback Plug is a practical tool for verifying signal continuity, insertion loss, and port function in fiber optic networks. Ideal for technicians and IT Pros, it enables fast, consistent testing across MPO-based fiber connections.

Test Single Mode Connections

This 9/125um MPO-12 Loopback Adapter is compatible with OS1 and OS2 cabling in point-to-point and structured installations. IEC and RoHS compliance ensures readiness for standardized deployments and testing in regulated environments.

Accurate Signal Diagnostics

Validate MPO transceivers, isolate faults, and confirm port behavior across high-speed parallel optic links. The fixed 12-fiber configuration with precision-aligned ferrules deliver clean signaling for accurate, reliable diagnostics.

For Enterprise Fiber Switches

The MPO-12 male connector attaches directly to female MPO/MTP ports for high-density testing without disrupting adjacent connections. A durable ABS housing withstands wear from repeated use and is suitable for frequent testing in data centers and edge or on-prem installations.