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Apple Computing Products:
macOS - Desktop Hardware
USB ports not working
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<blockquote data-quote="chscag" data-source="post: 1663545" data-attributes="member: 46727"><p>If the keyboard works in all three ports, then the ports are working. Have you tried new USB cables? If new cables don't solve the problem, then it's likely that your USB ports are putting out low power only. The keyboard and a printer will work off low power but not a hard drive. You can try a SMC reset but if that doesn't work, you're probably looking at a new logic board which wouldn't be worth replacing in a machine that old.</p></blockquote><p></p>
[QUOTE="chscag, post: 1663545, member: 46727"] If the keyboard works in all three ports, then the ports are working. Have you tried new USB cables? If new cables don't solve the problem, then it's likely that your USB ports are putting out low power only. The keyboard and a printer will work off low power but not a hard drive. You can try a SMC reset but if that doesn't work, you're probably looking at a new logic board which wouldn't be worth replacing in a machine that old. [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
USB ports not working
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