Review on 🔌 High-Performance Gigabit RJ45 Network Loopback Tester by Max Rosengren

I'm using this loopback tester to give the ethernet port a bearer so the status becomes 'on'. Not only that, but I expect the connection speed to be 1Gbps as advertised. I tried this on 3 different Intel NICs: I350, X540-AT2 and X722/577. The I350 supports speeds of 10/100/1000, but with this tester it only connects at 100 Mbps. The other two cards are 10G BaseT and they will not connect below 1 Gbps, so this tester was unable to determine the port status on the last two cards. I bought 2 of these by the way and they both behave the same. This was disappointing as I also bought "CablesOnline 6-Pack 10/100 4-Pair Ethernet Green Loopback Plugs, TS-UL02-6" for $9.99 and they plug in for 100Mbps as advertised. So this tester costs me almost the same as these 6 10/100Mbps jacks, but only delivers the same connection speed. for 10/100 Mbit/s. And since they don't really offer the speed I need, there doesn't seem to be a reason to pay 5x more than just get 6 CablesOnline packages.