One day I found myself in the need for a USB hub with an eternal power supply but when I went to a shop I verified they can be quite more expensive than the ones that don’t ha\ve external power supply. No big deal, “I’ll just by a cheap one
and add the external power supply”, I thought. And that’s what I did! After all I just had to add a wire on VCC, another on GND and cut the VDD wire of the USB cable that connects to the computer.. So, I went to a shop and bought the cheaper USB2.0 USB hub that I found and took it home for some small hacking.
This instructables has only 7 steps:
- Inspect the USB hub for signs of upgrades
- Open the enclosure
- Locate the GND and VCC traces and solder a wire to each one of them.
- Solder a connector to the wires.
- Cut the VCC (red) wire of the USB cable that connects the hub to the computer.
- If necessary, modify the enclosure to make the connector for the power supply accessible.
- Close the enclosure
For this instructable you will need the following tools:
You will also need the following skills:
- Basic circuit analysis skills (continuity testing, voltage measuring)
For better quality pictures check out http://www.thebitbangtheory.com/2012/06/adding-an-external-power-supply-to-a-cheap-usb-hub/