Though RJ-11 and RJ-45 look similar, their purposes are very different. RJ-11 connectors are smaller, designed for telephone lines, while RJ-45 is used for Ethernet networking. Mixing them up can cause connectivity issues. RJ-11 typically uses 2 or 4 wires, while RJ-45 uses 8. Recognizing their physical and functional differences can save you time during setup. This knowledge is espec... https://enableit.com/differences-between-rj11-rj12/