我添加了这些组件 ，插上USB键盘或者鼠标 或者U盘的时候 都会有这个打印消息，但是就是不能用，大家帮我看看这个是什么原因？ CHub(Root tier 0)::HubStatusChangeThread - port 1, change = 0x0001, status = 0x0301 CHub(Root tier 0)::HubStatusChangeThread - device attached on port 1 +CHub(Root tier 0)::AttachDevice - port = 1, fIsLowSpeed = 1 CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_OPENING_ENDPOINT0_PIPE, failures = 0 CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_USING_ADDRESS0, failures = 0 CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_RESET_AND_ENABLE_PORT, failures = 0 CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR_TEST, failures = 0 CHub::GetDescriptor - forcing descr type 0x0 to 0x1 CHub(Root tier 0)::AttachDevice - failure on DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR_TEST step CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_RESET_AND_ENABLE_PORT, failures = 1 CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR_TEST, failures = 1 CHub(Root tier 0)::AttachDevice - failure on DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR_TEST step CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_RESET_AND_ENABLE_PORT, failures = 2 CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR_TEST, failures = 2 CHub(Root tier 0)::AttachDevice - failure on DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR_TEST step CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_FAILED, failures = 3 -CHub(Root tier 0)::AttachDevice - port = 1, fIsLowSpeed = 1, address = 1 CHub(Root tier 0)::HubStatusChangeThread - port 1, change = 0x0001, status = 0x0100 CHub(Root tier 0)::HubStatusChangeThread - port 1, change = 0x0001, status = 0x0101 CHub(Root tier 0)::HubStatusChangeThread - device attached on port 1 +CHub(Root tier 0)::AttachDevice - port = 1, fIsLowSpeed = 0 CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_OPENING_ENDPOINT0_PIPE, failures = 0 CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_USING_ADDRESS0, failures = 0 CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_RESET_AND_ENABLE_PORT, failures = 0 CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR_TEST, failures = 0 CHub(Root tier 0)::AttachDevice - failure on DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR_TEST step CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_RESET_AND_ENABLE_PORT, failures = 1 CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR_TEST, failures = 1 CHub(Root tier 0)::AttachDevice - failure on DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR_TEST step CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_RESET_AND_ENABLE_PORT, failures = 2 CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR_TEST, failures = 2 CHub(Root tier 0)::AttachDevice - failure on DEVICE_CONFIG_STATUS_SCHEDULING_GET_DEVICE_DESCRIPTOR_TEST step CHub(Root tier 0)::AttachDevice - status = DEVICE_CONFIG_STATUS_FAILED, failures = 3 -CHub(Root tier 0)::AttachDevice - port = 1, fIsLowSpeed = 0, address = 1

你要学的还很多，尤其是要先多动动脑子！呵呵！