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How To Terminate Rj45 Keystone Jack

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Terminating an RJ45 Keystone Jack

Terminating an RJ45 keystone jack can be a bit intimidating for beginners, but it is an essential skill for anyone who wants to install Ethernet cables or upgrade their existing network. A keystone jack is a modular connector that snaps into a wall plate or patch panel and provides a port to connect an Ethernet cable. RJ45 is a standard connector that is often used in Ethernet networking. In this article, we will guide you through the steps to terminate an RJ45 keystone jack.

Tools Required

Before you start, make sure you have all the necessary tools:

- RJ45 keystone jack

- Ethernet cable (CAT5e or CAT6)

- Cable stripper

- Cable cutter

- Punch-down tool (110 or 66)

- Wire stripper

Step 1: Strip the Cable

Start by removing about 2 inches of the outer jacket of the Ethernet cable. You can use a cable stripper or a sharp knife, but be careful not to cut the inner wires. Identify the four twisted pairs of wires and untangle them.

Step 2: Arrange the Wires

Arrange the wires according to the T568A or T568B wiring standard. These are the two most common wiring standards for Ethernet cables, and you should use the same standard for both ends of the cable. In this example, we will use the T568B standard, which arranges the wires from left to right in this order:

- Orange Stripe

- Orange

- Green Stripe

- Blue

- Blue Stripe

- Green

- Brown Stripe

- Brown

Step 3: Trim the Wires

Trim the wires to the right length, leaving about 1/2 inch of exposed wire. Make sure the wires are straight and tidy, without any frayed ends or twists.

Step 4: Insert the Wires

Insert the wires into the keystone jack, following the same order as in Step 2. Push the wires all the way into the jack until they reach the end.

Step 5: Punch Down the Wires

Using the punch-down tool, punch down each wire firmly into the matching slot on the keystone jack. Make sure the wires are securely fastened and flush with the top of the jack.

Step 6: Test the Connection

Once all the wires have been punched down, use a cable tester to verify that the connection is correct and there are no faults or miswirings in the cable. If the test is successful, your RJ45 keystone jack is ready to use.


Terminating an RJ45 keystone jack is a straightforward process that requires a bit of practice and attention to detail. By following these steps, you can achieve a reliable and professional-grade connection for your Ethernet network. Remember to always use the same wiring standard at both ends of the cable, and to test the connection before use. Happy wiring!

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