RJ45 is a standardized 8P8C modular connector commonly used for Ethernet cabling. It consists of an unshielded twisted pair cable with an RJ45 connector on each end. The RJ45 connector has eight pins in a specific arrangement and is used to connect devices to networks or each other via twisted pair cables like CAT5. Its standardized design makes it reliable for transmitting digital signals in local area networks and other applications.

1. RJ 45 Connector

2. RJ-45
• RJ45 is a standardized physical network interface for connecting
telecommunications or data equipment.
• The "RJ" in RJ45 stands for "registered jack," since it is a standardized
networking interface.
• The "45" simply refers to the number of the interface standard.
• RJ45 is an 8P8C modular connector
• 8P8C = 8 position, 8 contact
• It looks similar to a telephone jack, but is slightly wider.
• Used with twisted pair cables, such as CAT5 cable
• RJ45 connectors are most commonly seen with Ethernet cables and
networks.

3. RJ45 cable
RJ45 cable is commonly called as Ethernet Cable
RJ45 cable consist of –
UTP (Unshielded Twisted Pair )Cable
RJ45 Connector at both end of UTP Cable
Boot or Cap

4. RJ45 Male :-
• It is commonly called as RJ45 connector .
• It is plugged with the network port of system
RJ45 Female :-
• It is a port in which RJ45 connector is plugged in.
• It is also called a network port.

5. RJ 45 Structure
RJ45 networking connector structure has three parts:
1.) Contact
2.) Insulator
3.) Shells or Housing.

6. RJ 45
Structure
Contact
Insulator
Shell

7. RJ-45 Pins

8. RJ45 Pinout
RJ45 Pinout can be wired in two different ways.
One version is called T-568A and the other is T-568B.

9. RJ45 Pinout Usage

10. Uses of RJ 45 Connector
• To provide internetworking between two systems.
• In system to connect with network.
• Cross connection for two system.
• Connection of system with a hub or router.
• Used for transmits digital signals between devices.

11. Applications
• Institutional Academy
• In making of network topologies
• Local Area Networks
• Fiber Media Converter

12. Advantage of RJ45
• They are easy to install.
• Very reliable
• Connection speeds are higher ,100 Mbps for Fast Ethernet

13. Disadvantage of RJ45
• It is only use for short distance network.
• Limited Mobility
• Require necessary wiring and equipments

14. !!! Thank You !!!