On Thu, 2 Dec 2010, Neil Benn wrote: > Hello, > > Thanks for your reply. Sorry, I made an error with my > terminology - full speed = USB1.0, high speed = USB2.0 and super speed > = USB3.0. The thing is that If I plug in 4 devices via a hub into one > USB2.0 controller all devices must share the bandwidth and power for > that entire controller. Four devices all plugged into the same controller are going to have to share bandwidth no matter what; there's no way around it. That's true even if you use a USB-3 controller and USB-3 hub. If the hub is powered, the devices can draw their power from the hub instead of from the controller. > I've foudn a card which has 4 * USB2.0 > controllers but the minimum order quantity is 300 which is a bit steep > for me! > > What I'm looking for is to plug 4 USB2.0 highs speed devices to run > at high speed on a USB3.0 super speed hub. Why not use a USB-2 controller and a USB-2 hub? > Is there a way to do that? According to Greg, you can't buy a working USB-3 hub. So I'd guess no, there isn't. Not yet, anyway. 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
