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It's likely that only one device has the smaller hole required for the smaller end. The other device should have the larger hole. If they both have large and small holes, then I don't think it matters which end you plug into which machine.
Sorry, there was a problem. Please try again later.The printer
Sorry, there was a problem. Please try again later.The larger goes into the computer USB, where as the smaller one goes into a printer.
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