Introduction
Most USB cables consist of four wires: red, black, white, and green. Some newer cables have eight wires, but the same steps apply. If the USB plug itself is damaged, you'll need to remove and replace the whole plug itself. Otherwise, just the damaged portion of the cable can be removed.
What you need
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Remove the broken portion of the USB cable with the wire cutters.
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You should now have two pieces of the cable left. If you had to remove the whole USB plug, you'll need a replacement plug.
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Cut the outer cable covering with wire cutters or scissors of both cables and be careful not to cut the wires themselves.
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Pull off the piece of cover that you've separated from the rest. You should be left with four exposed individual wires.
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If there are more than 4 wires, you probably have a USB 3.0 cable. In this case, make sure that whatever wires you'll be reconnecting are both USB 3.0.
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Strip all the wires out from both cables using a wire stripper. You'll need about three quarters of an inch of exposed copper wire.
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Solder like-colored wires to each other.
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Here is a video on how to solder wires together. https://www.youtube.com/watch?v=qxqZJH3S...
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Wrap all the wires and both cables together in electrical tape to connect everything back into one cable and so it lasts longer.
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