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Home » Tutorials » How to wire & crimp RJ45 in 6 simple steps (w/images)

How to wire & crimp RJ45 in 6 simple steps (w/images)

January 30, 2019 Updated by: I.C Tiempo 4 Comments

how to crimp rj45

How to crimp RJ45

Crimp RJ45 is one of the basic things you should know if you want to learn computer networking. It’s simply because, no cable connection there will be no network, though wireless networking is available, yet it is not stable as wired and the range is limited.

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5 signs of RAM problems

 

In this article, I will be sharing:

  • The basic crimping tools.
  • How to crimp Cat5e to RJ45.
  • The difference between straight-through and crossover crimping.

 So, let’s get started….

  • Basic and major parts of motherboard and its functions
  • 6  basic parts of a system unit
  • 5 Signs of RAM problems

Basic Tools in Crimping

  • Crimping tool – used to crimp RJ45 connector at the both ends of the cable.
  • Cat5/Cat5e – the commonly used cable for computer networking.
  • RJ45 (Registered Jack – 45) – is a connector that looks like RJ11. But slightly bigger and are mainly used for computer networking.
  • LAN (Local Area Network) Cable Tester- a testing tool used to test the accuracy of crimped RJ45 connector.

Basic Components of System Unit
6 Basic parts of a System unit

 

Crimping Tool Parts and Usage

  • RJ45 Crimper
  • Cable Cutter
  • Cable Stripper
  • Handle
how to crimp rj45

Crimping Color Coding

crimp rj45 color coding
Basic Components of System unit
Basic and Major parts of Motherboard and its functions

 

Why should you learn these crimping color coding?

It will dictate the kind of connection that you need and the devices you want to connect. So, study it carefully. To make it easier for you, just focus on the four colors, the orange, orange stripe, green and the green stripe.

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Because these colors are interchangeable and once interchange it will make a difference. As what you have noticed in the image above, switching  orange and stripe-orange to the position of green and stripe-green turns T-568A into T-568B. How about the remaining colors? Since it is fixed in its positions, I believe you won’t find it hard to familiarize.

How to crimp Cat5e/Cat5  twisted wires into RJ45?

  1. Strip the UTP (Cat5, Cat5e , Cat6, Cat6A) cable using your crimping tool stripper, or you can use a separate cable stripper.
  2. Untwist the twisted wires.
  3. Set the wire according to the color-coding above and cut it with your cutter. The wire must be half-inch long to fit inside RJ45.
Crimp rj45 properly
      4. Insert the  wires into the RJ45.
      5. Now, insert the RJ45 connector into the 8-pin crimper of your crimping tool.
      6. Finally, crimp the RJ45.
crimp rj45 picture

What is the difference between T-568A and T-568B?

Congratulations! You just finished crimping your RJ45. Now, you may wonder about the color coding. The T-568A and T-568B are having different color coding. What is the purpose? Let me put it this way, T-568A + T-568A = Straight-through and T-568B + T-568B = Straight-through but T-568A + T-568B = Crossover. Take a look at the images below.

Straight trough T568B

How to test your crimped RJ45 using the LAN Cable Tester?

To be sure that your cable and crimped RJ45 is working properly and to avoid future problems, you need to test it using your LAN Cable Tester. Please see the image below for your reference.

rj45 network tester
 

What devices that straight-through and crossover connect?

Straight-through is normally used for connecting different network devices such as:

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  • Router to hub and vice-versa
  • Hub to computer
  • Computer to switch

 On the other hand Crossover cable is used to connect similar devices, the likes of:

  • Router to router
  • Hub to hub
  • Switch to switch
  • Computer to Computer
  • Router to computer (Router to computer uses crossover cable because they both have an IP address. The only exception as far as I know)

   Done…I believe that you are now equipped with knowledge about crimping your own network cable. All you have to do now is to practice and familiarize everything mentioned in this post. If you have your own discovery that might help ease crimping network cable, feel free to comment below.

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Filed Under: Networking and Internet, Tutorials

About I.C Tiempo

Hi! ? Welcome to my tutorial & review site. This blog is an expression of my passion to technology, especially to software, computer & networking troubleshooting and other tech-related concern. You can find me @:

| Facebook | Twitter, )

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Comments

  1. Patrick O'Mally says

    September 18, 2014 at 3:47 pm

    As much as I admire the content of this particular “crimping rj45” page, I have to shake my head at the persistent misspelling of the word “through” which you have spelled as “trough” This sounds very much like a New York accent, but misspelled words on business pages are embarrassing. Please correct

    Reply
    • I.C Tiempo says

      September 19, 2014 at 2:23 pm

      Hello Patrick, I appreciate your honest comment and correction. I just updated the misspelled words. Thank you. (h)

      I hope that despite those errors, you still managed to grasp the needed information about crimping RJ45.

      Reply
  2. Jerome Morada says

    June 20, 2014 at 11:05 am

    Ang galing, very informative. This is a very detailed process in Crimping RJ45, recommended your site for Computer Technician Studs. Keep it up man!

    Reply
    • I.C Tiempo says

      June 22, 2014 at 12:04 pm

      Thanks again Jerome, I will try my best to offer more valuable contents.

      Reply

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