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🔧 Diagnose like a pro, connect with confidence!
The Networx Gigabit RJ45 Loopback Tester is a compact, professional-grade Ethernet diagnostic tool designed to instantly verify network port activity and link status. Supporting full gigabit speeds (1000Base-T) and backward compatible with 10/100 Ethernet, it loops all four wire pairs for accurate echo testing on switches, server NICs, and wall jacks. Built with a durable molded PVC housing and gold-plated contacts, it fits universally into any RJ45 port and comes with a lifetime warranty, making it an essential tool for network engineers and IT professionals.
| ASIN | B00E4OKGDE |
| Best Sellers Rank | #33,451 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #57 in Network & Cable Testers |
| Brand | Networx |
| Color | Blue |
| Compatible Devices | PC |
| Connector Type | RJ45 |
| Customer Reviews | 4.4 out of 5 stars 368 Reviews |
| Finish | Rj45 |
| Finish Type | Rj45 |
| Global Trade Identification Number | 00845425016560 |
| Item Dimensions | 3.56 x 3.25 x 0.78 inches |
| Item Weight | 0.06 Pounds |
| Item dimensions L x W x H | 3.56 x 3.25 x 0.78 inches |
| Manufacturer | Networx™ |
| Model Number | LB-GB45S |
| Number of Ports | 1 |
| Package Quantity | 1 |
| Power Plug Type | No Plug |
| UPC | 845425016560 |
| Unit Count | 1.0 Count |
| Warranty Type | Lifetime |
J**)
IMPORTANT TOOL for every network engineer.
It's basic, but it's necessary, and it works VERY well. Can't tell what switchport a wall port goes to? Throw on loopback detection on every port, plug this thing in, BOOM! Port identified! WAY easier than toning out cables!
F**G
Good product, great for troubleshooting older ethernet devices
Many older devices without auto-negotiation of RX-TX pin positions need a crossover cable rather than a common straight-through cable. This makes it easy to swap without needing a separate crossover cable.
J**A
Intended for IT
Very Good product and works as it it intended for. Just make sure you get the right one for the job. The Gig loopback is different from the RJ45. Although technically both are RJ45 structure, the internal wiring is different. These loopback are great for Analyst remoting-in and conducting their own company proprietary test on their machines.
M**A
works
Works fine.
B**E
didn't work
simply didn't work.
C**N
A Test Kit Must
Having a reliable way to quickly to check for a port failure is a must. Doing a quick loopback test is a fast, easy way to check a port. I like the design of this device because all of the wires are tucked inside the body.
J**R
Does exactly what it claims.
Nice network diagnostic tool.
J**A
Still not entirely sure how it works.
I got no use out of this. I won't give it a bad review just for that, but it could be more clear as to what it does. I wanted to use it to test my home data jacks, but I guess it's really only made to test cables? I still don't get it.
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