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I've reviewed the user manual for the Sabrent HB-UMLS USB Type A to 4-Port USB 2.0 Hub. This plug-and-play device features individual power switches and LED indicators for each of its four USB ports. I'm ready to answer any questions you have about the hub and its setup.
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How do I turn on a USB port?
How do I know if a USB port is powered on?
Do I need to install any software?