How to Make Straight Through Cable


Category 5 Ethernet cable, which is frequently just referred to as Cat5 cable, is used to network different devices together. In order to connect a computer or printer to a router you will need to use a type of Cat 5 cable called "straight through." While straight through cable can be purchased from office supply stores, it is fairly easy to make your own. To make a straight through cable you will need to start with a standard Cat5 cable and arrange the inner cable strands in the correct order.

Things You'll Need

  • Cat5 cable
  • Crimp tool
  • RJ-45 connectors
  • Tape measure
  • Measure out the distance between the two devices you want to connect with the straight through cable. Acquire a length of Cat5 Ethernet cable that is at least one foot longer than the measured distance to account for any mistakes made while cutting the cable.

  • Place one inch of either end of the Cat5 cable into the stripping hole in the crimp tool. Squeeze the handles of the crimp tool slightly to cut into the outer covering of the Cat5 cable.

  • Pull the crimp tool away from you to remove the outer covering from the inner strands of cable. Untwist each of the colored cable strands.

  • Arrange the colored strands, from left to right, in the correct order for a straight through cable. Line-up the strands in the order of white/orange, orange, white/green, blue, white/blue, green, white/brown, and then brown.

  • Snip off the ends of the colored wires with the cutting edge of the crimp tool to make sure they are all uniform length. Insert the colored cables into the plastic RJ-45 connector.

  • Place the RJ-45 connector into the crimping hole on the crimp tool. Squeeze the crimp tool's handles all the way down to crimp the RJ-45 connector onto the Cat5 cable.

  • Repeat the process of stripping, cutting, arranging, and crimping the other end of the Cat5 Ethernet cable.

Tips & Warnings

  • You can buy large quantities of Cat5 Ethernet cable at many hardware and electronics stores. A "cross over" cable is the opposite of a straight through cable and is used to directly connect two computers together without a router. To make a cross over cable you will need to arrange the colored cables in the order of white/green, green, white/orange, blue, white/blue, orange, white/brown, and brown.
  • Keep a close eye on the colored cables when you put them in the RJ-45 connectors. It's easy to accidentally move them out of the correct order before crimping them in place.

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