A cable that uses USB, plugged into a USB port on a computer, permits both data transfer and power to those devices attached to the cable. To manually disconnect the flow of data coming through a USB cable, install an On/Off switch onto one of the data lines in the cable. The procedure requires a few tools from around the house as well as supplies from a hardware store. No special electrical precautions are necessary while adding the switch to the USB cable.
- Skill level:
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Things you need
- Utility knife
- Wire stripper
- Electrical tape
Disconnect both ends of the USB cable from any computer USB port and any USB device. Lay the USB cable horizontally on a work surface.
Cut a 4-inch slit across the outer insulation at any point on the USB cable, using a utility knife. Pull the insulation back to reveal the wires inside.
Separate the white data wire from the others. Cut through the white data wire, using the blade of the utility knife. Strip 1/2-inch of insulation from each end of the two cut white data wires.
Loosen the screws on each end of the On/Off switch using a Phillips screwdriver. Wrap an end of the two cut white data wires around each screw. Tighten the screws. Push the insulation back together. Wrap a strip of electrical tape around the cut area of the USB cable for insulation.
Tips and warnings
- The green wire can be substituted for the white one, should you prefer to use it or if it is easier to grasp from inside the cable.
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