On Fri, 9 Dec 2011, Sebastian Andrzej Siewior wrote: > On HS we can only send one command at a time as we have only one stream, > right? No -- perhaps uas _does_ send only one command at a time, but you _can_ send as many commands as the device will support. The data streams for the commands can't be transferred concurrently, but the command IUs can be sent without waiting for earlier commands to complete. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html