Is there any danger of using these to check ports in a power-over-ethernet (poe) switch?

Only if you have done some crazy hardware alterations or a homicidal arch nemesis.

Will this work for 10Gbase-T connections over cat6a?

It should. Cat6 should pass lower data rates just fine. You'll just get link lights or not.

Will this test if the eithernet port on my camera is working?

It will be able to test Ethernet connection if your device has a network card that transmit the signal.

Does this work on non-gigabit connections as well?

Yes, this adapter is backwards compatible with non-gigabit connections.

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Networx Gigabit RJ45 Loopback Tester - 10/100/1000Base-T Network Port Validator - Ethernet Diagnostic Tool for Switches and Server NICs

Networx Gigabit RJ45 Loopback Tester - 10/100/1000Base-T Network Port Validator - Ethernet Diagnostic Tool for Switches and Server NICs

Product ID: 14213953

Details

Brand
Networx
Color
Blue
Compatible Devices
PC
Connector Type
RJ45
Item dimensions L x W x H
3.56 x 3.25 x

⚡Gigabit 1000Base-T support

🔄Loops all 4 wire pairs for echo test

🛠️Gold-plated corrosion-resistant contacts

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€ 33.63

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Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Diagnose like a pro, connect like a boss!

UNIVERSAL RJ 45 FIT - Engineered to securely connect with any standard RJ45 port for seamless testing.
INSTANT PORT VALIDATION - Verify active network ports and link status in seconds for zero downtime.
RUGGED COMPACT DESIGN - Durable molded PVC housing fits perfectly in your IT toolkit for daily use.
FULL GIGABIT COMPATIBILITY - Supports 10/100/1000Base-T for future-proof diagnostics on all Ethernet speeds.
LIFETIME WARRANTY ASSURANCE - Backed by Networx’s lifetime warranty—trusted by network pros worldwide.

The Networx Gigabit RJ45 Loopback Tester is a compact, professional-grade Ethernet diagnostic tool designed to instantly verify network port activity and link status across 10/100/1000Base-T interfaces. Featuring a molded adapter that loops all four wire pairs, it ensures accurate echo testing on switches, server NICs, and wall jacks. Built with gold-plated contacts and durable PVC housing, it guarantees reliable, corrosion-free performance backed by a lifetime warranty—ideal for network engineers and IT professionals seeking fast, precise troubleshooting.

Specifications

ASIN	B00E4OKGDE
Best Sellers Rank	#59,223 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #110 in Network & Cable Testers
Brand	Networx
Color	Blue
Compatible Devices	PC
Connector Type	RJ45
Customer Reviews	4.3 4.3 out of 5 stars (333)
Finish	Rj45
Global Trade Identification Number	00845425016560
Item Dimensions	3.56 x 3.25 x 0.78 inches
Item Weight	27.22 g
Manufacturer	Networx™
Mfr Part Number	LB-GB45S
Model Number	LB-GB45S
Number of Items	1
Number of Ports	1
Package Quantity	1
Power Plug Type	No Plug
Smart Home Compatibility	Not Smart Home Compatible
UPC	845425016560
Unit Count	1.0 Count
Warranty Type	Lifetime

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