RJ45 VS RJ11

1. RJ45:

   • 
     
   • Definition:
   • Registered Jack 45 (RJ45) is a standardized network connector used in Ethernet networking. It is the most common connector for connecting computers to local area networks (LANs), routers, switches, and other networking devices.
   • Usage:
   • RJ45 connectors are commonly used with Cat5e, Cat6, and Cat6a Ethernet cables for wired internet connections. They typically have eight pins and are larger than RJ11 connectors.

2. RJ11:

   • 
     
   • Definition:
   • Registered Jack 11 (RJ11) is a standardized telephone connector. It is commonly used for connecting landline telephones to telephone networks and, in some cases, for connecting other communication equipment.
   • Usage:
   • RJ11 connectors are smaller than RJ45 connectors and typically have four or six pins. They are commonly used in telephone cables, and each pin may be used for a different telephone line.

In summary, the key difference lies in their application:

• RJ45:

• Used for Ethernet networking, connecting devices in a local network, such as computers, routers, and switches.

• RJ11:

• Used for telephone connections, linking landline phones and, in some cases, other communication devices.

It's important to note that while the connectors may look similar, they serve distinct purposes, and using the correct type is crucial for proper functionality in networking or telecommunications setups.