Hi, Greg! > It should "just work", have you tried it? Yes, I tried with kernels 2.6.38.2 and 2.6.39 - both kernels untainted. The xhci-driver finds itself responsible for the USB-3-ports (two external, two interal) but whenever I connect a USB-pen-drive (either USB 2.0 or USB 3.0) to either an internal or external USB 3.0 port I get several of the following messages: xhci_hcd 0000:02:00.0: Unknown completion code 192 for reset device command. usb 3-1: Cannot reset HCD device state Then the following message: hub 3-0:1.0: Cannot enable port 1. Maybe the USB cable is bad? This repeats five times. Both pen drives work perfectly well on USB-3-ports on other PCs or on USB-2-ports on the same PC. Greetings, Michael -- 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