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bus powered

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Discussions on WindowsForum.com about bus powered USB hubs and devices often center on how Windows identifies them in Device Manager. One thread describes a user who installed a Sabrent 4-Port USB 3.0 Hub without an external power supply, expecting it to appear as a bus powered hub. Instead, Device Manager listed it as a self powered generic hub, despite the hub drawing power from the USB port. The user sought explanations for this discrepancy, highlighting confusion around how Windows classifies bus powered versus self powered devices. This tag covers troubleshooting and understanding of bus powered hardware detection in Windows.
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    Windows 7 Bus Powered Drive Seen as Self Powered Drive?

    I recently installed a Sabrent 4-Port USB 3.0 Hub (HB-UM43) which I assume should show up in device manager as a bus powered hub since it has no external power supply. It is listed as having a 900 mA draw and is currently powering a pair of 500 mA USB 3.0 flash drives and is recognized as a self...
    • Maxxwire1
    • Thread
    • bus powered device manager flash drive hardware power draw power supply sabrent self powered usb 3.0 usb hub
    • Replies: 1
    • Forum: Windows Hardware
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