StarTech.com MPO Loopback Plug, Single Mode 9/125 MPO-8 Female Fiber Loopback Adapter, MPO/MTP-APC Connector Loopback Test Plug, MPO Female Loopback Tester

Perform loopback testing and verify signal continuity across Single Mode MPO-8 fiber connections

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-8 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 8-fiber configuration with precision-aligned ferrules deliver clean signaling for accurate, reliable diagnostics.

For Enterprise Fiber Switches

The MPO-8 female connector attaches to male MPO/MTP interfaces with alignment pins, supporting 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.

Features
Product type	Fiber cable tester
Supported connectors	MPO/MTP
Test type	Loopback testing
Built-in display	No
Fiber mode structure	Single-mode
Product colour	Black, Green
Housing material	Acrylonitrile butadiene styrene (ABS)
Fibre optic type	OS1/OS2
Connector gender	Female
Certificates
Compliance certificates	Trade Agreements Act (TAA), RoHS, CE
Operational conditions
Storage temperature (T-T)	-40 - 75 °C
Operating temperature (T-T)	-40 - 75 °C
Weight & dimensions
Width	20 mm
Depth	65 mm
Height	8 mm
Weight	4 g
Package weight	7 g
Package depth	90 mm
Package width	120 mm
Package height	5 mm
Packaging data
Package weight	7 g
Package depth	90 mm
Package width	120 mm
Package height	5 mm
Technical details
Product type	Fiber cable tester
Supported connectors	MPO/MTP
Test type	Loopback testing
Built-in display	No
Fiber mode structure	Single-mode
Package width	120 mm
Package height	5 mm
Product colour	Black, Green
Compliance certificates	Trade Agreements Act (TAA), RoHS, CE
Logistics data
Products per master (outer) case	1000 pc(s)
Master (outer) case width	430 mm
Master (outer) case length	335 mm
Master (outer) case height	400 mm