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Can a USB Mass Storage Interface have multiple alternative interfaces?

April 26, 2017alternative interface interfaces mass storage USB

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Can a USB Mass Storage Interface have multiple alternative interfaces?

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No. The USB Mass Storage Class Specification does not allow for alternate interfaces. If a device has an interface that complies with the USB Mass Storage Class Specification, it needs to be on the first interface setting (if the interface has more than one alternate interface setting) because (on current operating systems) usbstor.sys only looks at the first interface setting.