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self powered

About this tag
The tag 'self powered' on WindowsForum.com covers discussions about USB hubs and devices that are detected as self powered in Windows Device Manager even when they lack an external power supply. In one thread, a user reports that a bus-powered Sabrent USB 3.0 hub without its own power adapter is recognized as a self powered hub, powering two flash drives. The discussion explores why Windows might misidentify a bus-powered hub as self powered, focusing on USB power classification, device manager behavior, and potential hardware or driver explanations. This tag is relevant for troubleshooting USB power detection issues 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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