@boardtac.solutions: Most people see an Ethernet cable and think it’s “just internet.” But inside that small cable are 8 tiny wires, each with a specific job. Some carry data. Some help devices communicate faster. And with PoE (Power over Ethernet), the same cable can even deliver electrical power to devices like CCTV cameras, Wi-Fi access points, and IP phones. That’s why understanding the RJ45 color code matters — especially in networking and CCTV installations. One wrong arrangement can mean slow speeds, unstable connections, or completely dead devices. What looks simple on the outside is actually carefully organized engineering behind the scenes. If you work with networking, CCTV, or structured cabling, this is one of those basics that saves you a lot of troubleshooting later. #Networking #RJ45 #PoE #Ethernet #CCTV