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USB mass storage device class
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{{Short description|USB device class for drives}} {{More citations needed|date=November 2022}} [[File:USB flash drive.jpg|thumb|upright|alt=A USB thumb drive and its cap, next to a 100 millimeter ruler for scale|[[USB flash drive]]s typically implement the USB mass storage device class.]] The '''USB mass storage device class''' (also known as '''USB MSC''' or '''UMS''') is a set of computing [[communications protocol]]s, specifically a [[USB#Device_classes|USB Device Class]], defined by the [[USB Implementers Forum]] that makes a [[USB]] device accessible to a host computing device and enables file transfers between the host and the USB device. To a host, the USB device acts as an external hard drive; the protocol sets interfaces with a number of storage devices.
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