Networx Fast Ethernet Loopback Tester (Cat5e) - RJ45 Port Validator for 10/100Base-T Networks - Legacy Network Diagnostics

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.

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.

There's a lot of bad reviews for this product, so I was hesitating to make a purchase. In the end, I decided to make a gamble purchase and I'm happy to say that I'm a lucky one. The products are working as expected and I don't need to request for any refund or anything else. There's nothing much to add for this review other than to share my experience.

I purchased this item and the gigabit version. I have tried every combination of the item on the end of an Ethernet cable to directly plugging it in to the port on the switch. I never get the blinky lights. I have tried plugging in to a port that is functioning before I remove the Ethernet. Still nothing. Doesn't seem to work at all.

Works as it should. I knocked off stars because of the loop for the keychain and difficulty activating the release. The loop got in the way of the release lever, making the plug difficult to remove. After I cut the loop off, things were easier, but still not a lot of space. I'll look for one that's a little longer next time.

No light indication of LAN connection at all. Do not waste your money. I used 3 months after receiving it. This is why not returned.