If you’ve ever terminated an Ethernet cable and paused like, “Wait… do I use T568A or T568B?” this video is for you. I break down what T568A and T568B actually are (the two approved wiring pinouts for twisted-pair Ethernet like Cat5e, Cat6, Cat6A, Cat7, Cat8… maybe even Cat9), and I show the real, physical difference: the green and orange pairs swap positions. And I also call out one of the biggest myths right away—no, one isn’t faster than the other. If both ends are wired correctly, performance is the same: same speed, same bandwidth, same reliability. Then I get hands-on and terminate both standards step-by-step using Cat6 UTP and matching Cat6 connectors, because mixing cable types and connectors can give you weird faults, noise issues, or failed certification even if the cable “looks” fine. I walk through stripping, untwisting, arranging the wire order for A and B, cutting to the right length so the jacket seats properly, crimping with a ratcheting crimper, and testing with both a pro-grade and budget tester. Finally, I cover crossover cables (A on one end, B on the other), why they’re basically unnecessary now thanks to auto MDIX, and the clean rule that beats everything: pick one standard and stay consistent. My personal opinion for most home networks: go with T568B, because it’s the most common and most premade cables are wired that way.