A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? A: No. Q: Should I include quotations after my reply? http://daringfireball.net/2007/07/on_top On Thu, Feb 23, 2017 at 07:43:23AM +0000, Du, Yuyang wrote: > Oh, then let me try to simplify it, what if it's an only USB 3.0 device? I have a USB keyboard around here somewhere that is a "USB 3.0" device, that is running at the USB "low speed" rate. :) Again, USB 3.0 supports all speed devices, see the spec for all of the details. And again, what specifically are you referring to, and again, have you tried the code out yourself? What is preventing you from testing this in your environment to determine if it works properly for you or not? thanks, greg k-h -- 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