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Step 5Cut the traces to the USB port
We want to isolate the USB port for two reasons:
1. To be sure someone doesn't attempt to run PowerChute or Windows' built in power backup monitoring.
That would alert them that the battery has been removed from the UPS.
2. To provide a dedicated USB connection to the hard drive.
This is important in order to be sure that there is enough voltage to the hard drive, and that the circuit is isolated properly.
You could theoretically investigate the existing connections and use diodes and whatnot, but it's just easier to cut the traces.
The easiest way to cut them is with an Exacto knife. Use short strokes to prevent slipping and cutting something else important.
1. To be sure someone doesn't attempt to run PowerChute or Windows' built in power backup monitoring.
That would alert them that the battery has been removed from the UPS.
2. To provide a dedicated USB connection to the hard drive.
This is important in order to be sure that there is enough voltage to the hard drive, and that the circuit is isolated properly.
You could theoretically investigate the existing connections and use diodes and whatnot, but it's just easier to cut the traces.
The easiest way to cut them is with an Exacto knife. Use short strokes to prevent slipping and cutting something else important.
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