RJ45 stands for Registered Jack 45 and is the most commonly used connector in wired networks. The jacks are mainly used to connect to the Local Area Network (LAN). Learn what an RJ-45 connector is, how to wire it, and the different types available for network cabling. Find out how to choose the right connector for your project and where to source parts through Octopart's platform. Guillevin ranks among Canada's largest distributors of electrical materials. We provide rapid deployment, high-density Network Connectivity Solutions. Find your part with the largest inventory. Millions of parts from 500+ suppliers. Shop easy with competitive pricing. Most orders ship the same day.